number A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers c ...

dimensionless quantities A dimensionless quantity (also known as a bare quantity, pure quantity, or scalar quantity as well as quantity of dimension one) is a quantity to which no physical dimension is assigned, with a corresponding SI unit of measurement of one (or 1) ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

monkey Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as the simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes, which constitutes an incomple ...

Hamlet ''The Tragedy of Hamlet, Prince of Denmark'', often shortened to ''Hamlet'' (), is a tragedy written by William Shakespeare sometime between 1599 and 1601. It is Shakespeare's longest play, with 29,551 words. Set in Denmark, the play depicts ...

punctuation Punctuation (or sometimes interpunction) is the use of spacing, conventional signs (called punctuation marks), and certain typographical devices as aids to the understanding and correct reading of written text, whether read silently or aloud. An ...

capitalization Capitalization (American English) or capitalisation (British English) is writing a word with its first letter as a capital letter (uppercase letter) and the remaining letters in lower case, in writing systems with a case distinction. The term a ...

IEEE floating-point The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point arithmetic established in 1985 by the Institute of Electrical and Electronics Engineers (IEEE). The standard addressed many problems found in ...

shuffling Shuffling is a procedure used to randomize a deck of playing cards to provide an element of chance in card games. Shuffling is often followed by a cut, to help ensure that the shuffler has not manipulated the outcome. __TOC__ Techniques Over ...

standard 52-card deck The standard 52-card deck of French-suited playing cards is the most common pack of playing cards used today. In English-speaking countries it is the only traditional pack used for playing cards; in many countries of the world, however, it is used ...

single-precision Single-precision floating-point format (sometimes called FP32 or float32) is a computer number format, usually occupying 32 bits in computer memory; it represents a wide dynamic range of numeric values by using a floating radix point. A floatin ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

quecto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

ronto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

yocto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

zepto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

keno Keno is a lottery-like gambling game often played at modern casinos, and also offered as a game in some lotteries. Players wager by choosing numbers ranging from 1 through (usually) 80. After all players make their wagers, 20 numbers (some va ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

atto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

femto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

Ramanujan constant In number theory, a Heegner number (as termed by Conway and Guy) is a square-free positive integer ''d'' such that the imaginary quadratic field \Q\left sqrt\right/math> has class number 1. Equivalently, its ring of integers has unique factoriz ...

almost integer In recreational mathematics, an almost integer (or near-integer) is any number that is not an integer but is very close to one. Almost integers are considered interesting when they arise in some context in which they are unexpected. Almost inte ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

pico- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

nano- Nano (symbol n) is a unit prefix meaning "one billionth". Used primarily with the metric system, this prefix denotes a factor of 10−9 or . It is frequently encountered in science and electronics for prefixing Unit of measurement, units of tim ...

Powerball Powerball is an American lottery game offered by 45 states, the District of Columbia, Puerto Rico and the U.S. Virgin Islands. It is coordinated by the Multi-State Lottery Association (MUSL). From its inaugural drawing on April 19, 1992, unti ...

long and short scales The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

micro- ''Micro'' (Greek letter μ ( U+03BC) or the legacy symbol µ (U+00B5)) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth). Confirmed in 1960, the prefix comes from the Greek ('), meaning "small". The symbol for th ...

Poker Poker is a family of comparing card games in which players wager over which hand is best according to that specific game's rules. It is played worldwide, however in some places the rules may vary. While the earliest known form of the game w ...

straight flush In poker, players form sets of five playing cards, called ''hands'', according to the rules of the game. Each hand has a rank, which is compared against the ranks of other hands participating in the showdown to decide who wins the pot. In high ...

milli- ''Milli'' (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3). Proposed in 1793, and adopted in 1795, the prefix comes from the Latin , meaning ''one thousand'' (the Latin plural is ). Since 1960, the pre ...

full house ''Full House'' is an American television sitcom created by Jeff Franklin for ABC. The show is about widowed father Danny Tanner who enlists his brother-in-law Jesse Katsopolis and childhood best friend Joey Gladstone to help raise his three dau ...

flush Flush may refer to: Places * Flush, Kansas, a community in the United States Architecture, construction and manufacturing * Flush cut, a type of cut made with a French flush-cut saw or diagonal pliers * Flush deck, in naval architecture * Fl ...

straight Straight may refer to: Slang * Straight, slang for heterosexual ** Straight-acting, an LGBT person who does not exhibit the appearance or mannerisms of the gay stereotype * Straight, a member of the straight edge subculture Sport and games * ...

fine-structure constant In physics, the fine-structure constant, also known as the Sommerfeld constant, commonly denoted by (the Greek letter ''alpha''), is a fundamental physical constant which quantifies the strength of the electromagnetic interaction between ele ...

hundredth In arithmetic, a hundredth is a single part of something that has been divided equally into a hundred parts. For example, a hundredth of 675 is 6.75. In this manner it is used with the prefix "centi" such as in centimeter. A hundredth is the re ...

centi- ''Centi'' (symbol c) is a unit prefix in the metric system denoting a factor of one hundredth. Proposed in 1793, and adopted in 1795, the prefix comes from the Latin , meaning "hundred" (cf. century, cent, percent, centennial). Since 1960, the pr ...

UK National Lottery The National Lottery is the state-franchised national lottery established in 1994 in the United Kingdom. It is regulated by the Gambling Commission, and is currently operated by Camelot Group, to which the licence was granted in 1994, 2001 and ...

Powerball Powerball is an American lottery game offered by 45 states, the District of Columbia, Puerto Rico and the U.S. Virgin Islands. It is coordinated by the Multi-State Lottery Association (MUSL). From its inaugural drawing on April 19, 1992, unti ...

two pair In poker, players form sets of five playing cards, called ''hands'', according to the rules of the game. Each hand has a rank, which is compared against the ranks of other hands participating in the showdown to decide who wins the pot. In high ...

deci- ''Deci'' (symbol d) is a decimal unit prefix in the metric system denoting a factor of one tenth. Proposed in 1793, and adopted in 1795, the prefix comes from the Latin , meaning "tenth". Since 1960, the prefix is part of the International System ...

tax A tax is a compulsory financial charge or some other type of levy imposed on a taxpayer (an individual or legal entity) by a governmental organization in order to fund government spending and various public expenditures (regional, local, or n ...

tithe A tithe (; from Old English: ''teogoþa'' "tenth") is a one-tenth part of something, paid as a contribution to a religious organization or compulsory tax to government. Today, tithes are normally voluntary and paid in cash or cheques or more r ...

one pair In poker, players form sets of five playing cards, called ''hands'', according to the rules of the game. Each hand has a rank, which is compared against the ranks of other hands participating in the showdown to decide who wins the pot. In high ...

no pair In poker, players form sets of five playing cards, called ''hands'', according to the rules of the game. Each hand has a rank, which is compared against the ranks of other hands participating in the showdown to decide who wins the pot. In high ...

Nebraska Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the southwe ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

Judaism Judaism ( he, ''Yahăḏūṯ'') is an Abrahamic, monotheistic, and ethnic religion comprising the collective religious, cultural, and legal tradition and civilization of the Jewish people. It has its roots as an organized religion in the ...

Christianity Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus of Nazareth. It is the world's largest and most widespread religion with roughly 2.38 billion followers representing one-third of the global pop ...

Islam Islam (; ar, ۘالِإسلَام, , ) is an Abrahamic religions, Abrahamic Monotheism#Islam, monotheistic religion centred primarily around the Quran, a religious text considered by Muslims to be the direct word of God in Islam, God (or ...

Unicode Unicode, formally The Unicode Standard,The formal version reference is is an information technology Technical standard, standard for the consistent character encoding, encoding, representation, and handling of Character (computing), text expre ...

Lisu Supplement Lisu Supplement is a Unicode block containing supplementary characters of the Fraser alphabet, which is used to write the Lisu language Lisu ( Fraser alphabet: , or ; New Lisu script: ; zh, c=傈僳语, p=Lìsùyǔ; my, လီဆူဘာ ...

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

diagonal In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge. Informally, any sloping line is called diagonal. The word ''diagonal'' derives from the ancient Greek δ� ...

square In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle with two equal-length adj ...

golden ratio In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Expressed algebraically, for quantities a and b with a > b > 0, where the Greek letter phi ( ...

diagonal In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge. Informally, any sloping line is called diagonal. The word ''diagonal'' derives from the ancient Greek δ� ...

unit cube A unit cube, more formally a cube of side 1, is a cube whose sides are 1 unit long.. See in particulap. 671. The volume of a 3-dimensional unit cube is 1 cubic unit, and its total surface area is 6 square units.. Unit hypercube The term '' ...

binary Binary may refer to: Science and technology Mathematics * Binary number, a representation of numbers using only two digits (0 and 1) * Binary function, a function that takes two arguments * Binary operation, a mathematical operation that ta ...

natural logarithm The natural logarithm of a number is its logarithm to the base of the mathematical constant , which is an irrational and transcendental number approximately equal to . The natural logarithm of is generally written as , , or sometimes, if ...

ternary computer A ternary computer, also called trinary computer, is one that uses ternary logic (i.e., base 3) instead of the more common binary system (i.e., base 2) in its calculations. This means it uses trits (instead of bits, as most computers do). Types ...

ternary Ternary (from Latin ''ternarius'') or trinary is an adjective meaning "composed of three items". It can refer to: Mathematics and logic * Ternary numeral system, a base-3 counting system ** Balanced ternary, a positional numeral system, useful ...

Trinity The Christian doctrine of the Trinity (, from 'threefold') is the central dogma concerning the nature of God in most Christian churches, which defines one God existing in three coequal, coeternal, consubstantial divine persons: God the F ...

circle A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is const ...

Four Noble Truths In Buddhism, the Four Noble Truths (Sanskrit: ; pi, cattāri ariyasaccāni; "The four Arya satyas") are "the truths of the Noble Ones", the truths or realities for the "spiritually worthy ones". 7_±_2,_in_ 7_±_2,_in_cognitive_science">The_Magical_Number_Seven,_Plus_or_Minus_Two">7_±_2,_in_cognitive_science,_George_Armitage_Miller.html" ;"title="cognitive_science.html" ;"title="The Magical Number Seven, Plus or Minus Two">7 ± 2, in cognitive science">The Magical Number Seven, Plus or Minus Two">7 ± 2, in cognitive science, George Armitage Miller">George A. Miller's estimate of the number of objects that can be simultaneously held in human working memory. * ''Music'': 7 (number), 7 notes in a major scale, major or minor scale. * ''Astronomy:'' 8 (number), 8 planets in the Solar System. * ''Religion:'' the Eightfold Path in Buddhism. * ''Literature:'' 9 circles of

Hell In religion and folklore, hell is a location in the afterlife in which evil souls are subjected to punitive suffering, most often through torture, as eternal punishment after death. Religions with a linear divine history often depict hell ...

in the ''

Inferno Inferno may refer to: * Hell, an afterlife place of suffering * Conflagration, a large uncontrolled fire Film * ''L'Inferno'', a 1911 Italian film * Inferno (1953 film), ''Inferno'' (1953 film), a film noir by Roy Ward Baker * Inferno (1973 fi ...

'' by

Dante Alighieri Dante Alighieri (; – 14 September 1321), probably baptized Durante di Alighiero degli Alighieri and often referred to as Dante (, ), was an Italian poet, writer and philosopher. His ''Divine Comedy'', originally called (modern Italian: '' ...

.

10¹

(10; ten) ISO:

deca- ''Deca'' (American and British English spelling differences#-re, -er, International spelling as used by the International Bureau of Weights and Measures;

(da) * ''Demography:'' The population of

Pesnopoy Pesnopoy ( bg, Песнопой) is a village in Ardino Municipality, Kardzhali Province, southern-central Bulgaria. It is located southeast of Sofia Sofia ( ; bg, София, Sofiya, ) is the capital and largest city of Bulgaria. It is ...

, a village in

Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedon ...

, was 10 in 2007. * ''Human scale:'' There are 10 digits on a pair of human

hand A hand is a prehensile, multi-fingered appendage located at the end of the forearm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs. A few other vertebrates such as the koala (which has two opposable thumbs on each "h ...

s, and 10

toe Toes are the digits (fingers) of the foot of a tetrapod. Animal species such as cats that walk on their toes are described as being ''digitigrade''. Humans, and other animals that walk on the soles of their feet, are described as being ''plan ...

s on a pair of human

feet The foot ( : feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is a separate organ at the terminal part of the leg made ...

. * ''Mathematics:'' The number system used in everyday life, the

decimal The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers of the Hindu–Arabic numeral ...

system, has 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. * ''Religion:'' the

Ten Commandments The Ten Commandments (Biblical Hebrew עשרת הדברים \ עֲשֶׂרֶת הַדְּבָרִים, ''aséret ha-dvarím'', lit. The Decalogue, The Ten Words, cf. Mishnaic Hebrew עשרת הדיברות \ עֲשֶׂרֶת הַדִּבְ� ...

in the

Abrahamic religions The Abrahamic religions are a group of religions centered around worship of the God of Abraham. Abraham, a Hebrew patriarch, is extensively mentioned throughout Abrahamic religious scriptures such as the Bible and the Quran. Jewish tradition ...

. * ''Music:'' The number of notes (12) in a

chromatic scale The chromatic scale (or twelve-tone scale) is a set of twelve pitches (more completely, pitch classes) used in tonal music, with notes separated by the interval of a semitone. Chromatic instruments, such as the piano, are made to produce the ...

. * ''Astrology:'' There are 12

zodiac signs In Western astrology, astrological signs are the twelve 30-degree sectors that make up Earth's 360-degree orbit around the Sun. The signs enumerate from the first day of spring, known as the First Point of Aries, which is the vernal equinox. ...

, each one representing part of the annual path of the sun's movement across the night sky. * ''Computing –

Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

:'' Twelve successive consumer versions of

Windows NT Windows NT is a proprietary graphical operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems sc ...

have been released as of December 2021. * ''Music:'' The number (15) of completed, numbered

string quartet The term string quartet can refer to either a type of musical composition or a group of four people who play them. Many composers from the mid-18th century onwards wrote string quartets. The associated musical ensemble consists of two violinists ...

s by each of

Ludwig van Beethoven Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. Beethoven remains one of the most admired composers in the history of Western music; his works rank amongst the most performed of the classical ...

and

Dmitri Shostakovich Dmitri Dmitriyevich Shostakovich, , group=n (9 August 1975) was a Soviet-era Russian composer and pianist who became internationally known after the premiere of his Symphony No. 1 (Shostakovich), First Symphony in 1926 and was regarded throug ...

. * ''Linguistics:'' The

Finnish language Finnish ( endonym: or ) is a Uralic language of the Finnic branch, spoken by the majority of the population in Finland and by ethnic Finns outside of Finland. Finnish is one of the two official languages of Finland (the other being Swedish ...

has fifteen

noun A noun () is a word that generally functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.Example nouns for: * Living creatures (including people, alive, d ...

cases. * ''Mathematics:'' The

hexadecimal In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, hexa ...

system, a common number system used in computer programming, uses 16 digits where the last 6 are usually represented by letters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. * ''Computing – Unicode:'' The minimum possible size of a

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

is 16 contiguous code points (i.e., U+''abcde''0 - U+''abcde''F). * ''Computing –

UTF-16 UTF-16 (16-bit computing, 16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variab ...

/

Unicode Unicode, formally The Unicode Standard,The formal version reference is is an information technology Technical standard, standard for the consistent character encoding, encoding, representation, and handling of Character (computing), text expre ...

:'' There are 17 addressable

plane Plane(s) most often refers to: * Aero- or airplane, a powered, fixed-wing aircraft * Plane (geometry), a flat, 2-dimensional surface Plane or planes may also refer to: Biology * Plane (tree) or ''Platanus'', wetland native plant * ''Planes' ...

s in UTF-16, and, thus, as Unicode is limited to the UTF-16 code space, 17 valid planes in Unicode. * ''Science fiction:'' The 23 enigma plays a prominent role in the plot of ''

The Illuminatus! Trilogy ''The Illuminatus! Trilogy'' is a series of three novels by American writers Robert Shea and Robert Anton Wilson, first published in 1975.''Illuminatus!'' was written between 1969 and 1971, but not published until 1975 according to Robert Anto ...

'' by

Robert Shea Robert Joseph Shea (February 14, 1933 – March 10, 1994) was an American novelist and former journalist best known as co-author with Robert Anton Wilson of the science fantasy trilogy ''Illuminatus!'' It became a cult success and was later turned ...

and

Robert Anton Wilson Robert Anton Wilson (born Robert Edward Wilson; January 18, 1932 – January 11, 2007) was an American author, futurist, psychologist, and self-described agnostic mystic. Recognized within Discordianism as an Episkopos, pope and saint, Wilson ...

. * ''Mathematics:'' e ≈ 23.140692633 * ''Music:'' a combined total of 24 major and minor keys, also the number of works in some musical cycles of

J. S. Bach Johann Sebastian Bach (28 July 1750) was a German composer and musician of the late Baroque period. He is known for his orchestral music such as the '' Brandenburg Concertos''; instrumental compositions such as the Cello Suites; keyboard wo ...

,

Frédéric Chopin Frédéric François Chopin (born Fryderyk Franciszek Chopin; 1 March 181017 October 1849) was a Polish composer and virtuoso pianist of the Romantic period, who wrote primarily for solo piano. He has maintained worldwide renown as a leadin ...

,

Alexander Scriabin Alexander Nikolayevich Scriabin (; russian: Александр Николаевич Скрябин ; – ) was a Russian composer and virtuoso pianist. Before 1903, Scriabin was greatly influenced by the music of Frédéric Chopin and composed ...

, and

Dmitri Shostakovich Dmitri Dmitriyevich Shostakovich, , group=n (9 August 1975) was a Soviet-era Russian composer and pianist who became internationally known after the premiere of his Symphony No. 1 (Shostakovich), First Symphony in 1926 and was regarded throug ...

. * ''Alphabetic writing:'' There are 26 letters in the Latin-derived

English alphabet The alphabet for Modern English is a Latin-script alphabet consisting of 26 letters, each having an upper- and lower-case form. The word ''alphabet'' is a compound of the first two letters of the Greek alphabet, '' alpha'' and '' beta''. ...

(excluding letters found only in foreign loanwords). * ''Science fiction:'' The number 42, in by

Douglas Adams Douglas Noel Adams (11 March 1952 – 11 May 2001) was an English author and screenwriter, best known for ''The Hitchhiker's Guide to the Galaxy''. Originally a 1978 BBC radio comedy, ''The Hitchhiker's Guide to the Galaxy'' developed into a " ...

, is the

Answer to the Ultimate Question of Life, the Universe, and Everything Answer commonly refers to response to a question. Answer may also refer to: * Answer (law), any reply to a question, counter-statement or defense in a legal procedure Music * Answer, an element of a fugue Albums * ''Answer'' (Angela Aki albu ...

which is calculated by an enormous supercomputer over a period of 7.5 million years. * ''Biology:'' Each human cell contains 46

chromosome A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...

s. * ''Phonology:'' There are 47

phoneme In phonology and linguistics, a phoneme () is a unit of sound that can distinguish one word from another in a particular language. For example, in most dialects of English, with the notable exception of the West Midlands and the north-west o ...

s in

English phonology Like many other languages, English has wide variation in pronunciation, both historically and from dialect to dialect. In general, however, the regional dialects of English share a largely similar (but not identical) phonological system. Amon ...

in

Received Pronunciation Received Pronunciation (RP) is the Accent (sociolinguistics), accent traditionally regarded as the Standard language, standard and most Prestige (sociolinguistics), prestigious form of spoken British English. For over a century, there has been ...

. * ''Syllabic writing:'' There are 49 letters in each of the two

kana The term may refer to a number of syllabaries used to write Japanese phonological units, morae. Such syllabaries include (1) the original kana, or , which were Chinese characters (kanji) used phonetically to transcribe Japanese, the most pr ...

syllabaries (

hiragana is a Japanese syllabary, part of the Japanese writing system, along with ''katakana'' as well as ''kanji''. It is a phonetic lettering system. The word ''hiragana'' literally means "flowing" or "simple" kana ("simple" originally as contrast ...

and

katakana is a Japanese syllabary, one component of the Japanese writing system along with hiragana, kanji and in some cases the Latin script (known as rōmaji). The word ''katakana'' means "fragmentary kana", as the katakana characters are derived fr ...

) used to represent

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

(not counting letters representing sound patterns that have never occurred in Japanese). * ''

Chess Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king. It is sometimes called international chess or Western chess to disti ...

:'' Either player in a chess game can claim a draw if 50 consecutive moves are made by each side without any captures or pawn moves. * ''Demography:'' The population of Nassau Island, part of the

Cook Islands ) , image_map = Cook Islands on the globe (small islands magnified) (Polynesia centered).svg , capital = Avarua , coordinates = , largest_city = Avarua , official_languages = , lan ...

, was around 78 in 2016. * ''Syllabic writing:'' There are 85 letters in the modern version of the

Cherokee syllabary The Cherokee syllabary is a syllabary invented by Sequoyah in the late 1810s and early 1820s to write the Cherokee language. His creation of the syllabary is particularly noteworthy as he was illiterate until the creation of his syllabary. He ...

. * ''Music:'' There are 88 keys on a

grand piano The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a keyboa ...

. * ''Computing –

ASCII ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Because of ...

:'' There are 95 printable characters in the

ASCII ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Because of ...

character set Character encoding is the process of assigning numbers to graphical characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using digital computers. The numerical values that ...

.

10²

(100;

hundred 100 or one hundred (Roman numeral: C) is the natural number following 99 and preceding 101. In medieval contexts, it may be described as the short hundred or five score in order to differentiate the English and Germanic use of "hundred" to de ...

) ISO:

hecto- ''Hecto'' (symbol: h) is a decimal unit prefix in the metric system denoting a factor of one hundred. It was adopted as a multiplier in 1795, and comes from the Greek , meaning "hundred". In 19th century English it was sometimes spelled "hecato", ...

(h) * ''Music:'' There are 104 numbered symphonies of

Franz Josef Haydn Franz Joseph Haydn ( , ; 31 March 173231 May 1809) was an Austrian composer of the Classical period. He was instrumental in the development of chamber music such as the string quartet and piano trio. His contributions to musical form have l ...

. * ''European history:'' Groupings of 100 homesteads were a common administrative unit in Northern Europe and Great Britain (see

Hundred (county division) A hundred is an administrative division that is geographically part of a larger region. It was formerly used in England, Wales, some parts of the United States, Denmark, Southern Schleswig, Sweden, Finland, Norway, the Bishopric of Ösel–Wiek, C ...

). * ''Religion:'' 108 is a sacred number in

Hinduism Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...

. * ''Chemistry:'' 118

chemical element A chemical element is a species of atoms that have a given number of protons in their nuclei, including the pure substance consisting only of that species. Unlike chemical compounds, chemical elements cannot be broken down into simpler sub ...

s have been discovered or synthesized as of 2016. * ''Computing – ASCII:'' There are 128 characters in the

ASCII ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Because of ...

character set, including nonprintable

control character In computing and telecommunication, a control Character (computing), character or non-printing character (NPC) is a code point (a number) in a character encoding, character set, that does not represent a written symbol. They are used as in-band ...

s. * ''Phonology:'' The

Taa language Taa , also known as ǃXóõ (also spelled ǃKhong and ǃXoon; ), is a Tuu languages, Tuu language notable for its large number of phonemes, perhaps the largest in the world. It is also notable for having perhaps the heaviest functional load of ...

is estimated to have between 130 and 164 distinct phonemes. * ''Political Science:'' There were 193 member states of the

United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and international security, security, develop friendly relations among nations, achieve international cooperation, and be ...

as of 2011. * ''Computing:'' A GIF image (or an

8-bit In computer architecture, 8-bit Integer (computer science), integers or other Data (computing), data units are those that are 8 bits wide (1 octet (computing), octet). Also, 8-bit central processing unit (CPU) and arithmetic logic unit (ALU) arc ...

image) supports maximum 256 (=2⁸) colors. * ''Computing – Unicode:'' There are 320 different

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

s as of Unicode 14.0 (2021). * ''Aviation:'' 583 persons died in the 1977

Tenerife airport disaster The Tenerife airport disaster occurred on March 27, 1977, when two Boeing 747 passenger jets collided on the runway at Los Rodeos Airport (now Tenerife North Airport) on the Spanish island of Tenerife. The collision occurred when KLM Flight 4 ...

, the deadliest accident not caused by deliberate terrorist action in the history of civil aviation. * ''Music:'' The highest number (626) in the

Köchel catalogue The Köchel catalogue (german: Köchel-Verzeichnis, links=no) is a chronological catalogue of compositions by Wolfgang Amadeus Mozart, originally created by Ludwig Ritter von Köchel, in which the entries are abbreviated ''K.'', or ''KV''. The n ...

of works of

Wolfgang Amadeus Mozart Wolfgang Amadeus Mozart (27 January 17565 December 1791), baptised as Joannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical period. Despite his short life, his rapid pace of composition r ...

. * ''Demography:'' The

Vatican City Vatican City (), officially the Vatican City State ( it, Stato della Città del Vaticano; la, Status Civitatis Vaticanae),—' * german: Vatikanstadt, cf. '—' (in Austria: ') * pl, Miasto Watykańskie, cf. '—' * pt, Cidade do Vati ...

, the least populous independent country, has an approximate population of 800 as of 2018.

10³

(;

thousand 1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000. A group of one thousand th ...

) ISO:

kilo- Kilo is a decimal unit prefix in the metric system denoting multiplication by one thousand (103). It is used in the International System of Units, where it has the symbol k, in lowercase. The prefix ''kilo'' is derived from the Greek word (), ...

(k) * ''Demography:'' The population of Ascension Island is 1,122. * ''Music:'' 1,128: number of known extant works by

Johann Sebastian Bach Johann Sebastian Bach (28 July 1750) was a German composer and musician of the late Baroque period. He is known for his orchestral music such as the '' Brandenburg Concertos''; instrumental compositions such as the Cello Suites; keyboard w ...

recognized in the

Bach-Werke-Verzeichnis The (BWV; ; ) is a catalogue of compositions by Johann Sebastian Bach. It was first published in 1950, edited by Wolfgang Schmieder. The catalogue's second edition appeared in 1990. An abbreviated version of that second edition, known as BWV ...

as of 2017. * ''Typesetting:'' 2,000–3,000

letters Letter, letters, or literature may refer to: Characters typeface * Letter (alphabet), a character representing one or more of the sounds used in speech; any of the symbols of an alphabet. * Letterform, the graphic form of a letter of the alphabe ...

on a typical typed

page Page most commonly refers to: * Page (paper), one side of a leaf of paper, as in a book Page, PAGE, pages, or paging may also refer to: Roles * Page (assistance occupation), a professional occupation * Page (servant), traditionally a young m ...

of text. * ''Mathematics:'' 2,520 (5×7×8×9 or 2³×3²×5×7) is the

least common multiple In arithmetic and number theory, the least common multiple, lowest common multiple, or smallest common multiple of two integers ''a'' and ''b'', usually denoted by lcm(''a'', ''b''), is the smallest positive integer that is divisible by bot ...

of every positive integer under (and including) 10. * ''Terrorism:'' 2,996 persons (including 19 terrorists) died in the

terrorist Terrorism, in its broadest sense, is the use of criminal violence to provoke a state of terror or fear, mostly with the intention to achieve political or religious aims. The term is used in this regard primarily to refer to intentional violen ...

attacks of

September 11, 2001 The September 11 attacks, commonly known as 9/11, were four coordinated suicide terrorist attacks carried out by al-Qaeda against the United States on Tuesday, September 11, 2001. That morning, nineteen terrorists hijacked four commerc ...

. * ''Biology:'' the DNA of the simplest

virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...

es has 3,000

base pair A base pair (bp) is a fundamental unit of double-stranded nucleic acids consisting of two nucleobases bound to each other by hydrogen bonds. They form the building blocks of the DNA double helix and contribute to the folded structure of both DNA ...

s. * ''Military history'': 4,200 (Republic) or 5,200 (Empire) was the standard size of a

Roman legion The Roman legion ( la, legiō, ) was the largest military unit of the Roman army, composed of 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic (509 BC–27 BC) and of 5,600 infantry and 200 auxilia in the period of ...

. * ''Linguistics:'' Estimates for the

linguistic diversity Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...

of living human languages or dialects range between 5,000 and 10,000. (

SIL Ethnologue ''Ethnologue: Languages of the World'' (stylized as ''Ethnoloɠue'') is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It is the world's most comprehensi ...

in 2009 listed 6,909 known living languages.) *''Astronomy – Catalogues:'' There are 7,840

deep-sky object A deep-sky object (DSO) is any astronomical object that is not an individual star or Solar System object (such as Sun, Moon, planet, comet, etc.). The classification is used for the most part by amateur astronomers to denote visually observed f ...

s in the

NGC Catalogue The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and ...

from 1888. * ''Lexicography:'' 8,674 unique words in the

Hebrew Bible The Hebrew Bible or Tanakh (;"Tanach"
''Random House Webster's Unabridged Dictionary''. Hebrew: ''Tān ...

.

10⁴

(;

ten thousand The Ten Thousand ( grc, οἱ Μύριοι, ''oi Myrioi'') were a force of mercenary units, mainly Greeks, employed by Cyrus the Younger to attempt to wrest the throne of the Persian Empire from his brother, Artaxerxes II. Their march to the Bat ...

or a

myriad A myriad (from Ancient Greek grc, μυριάς, translit=myrias, label=none) is technically the number 10,000 (ten thousand); in that sense, the term is used in English almost exclusively for literal translations from Greek, Latin or Sinospher ...

) * ''Biology:'' Each

neuron A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron is the main component of nervous tissue in all animals except sponges and placozoa. N ...

in the

human brain The human brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the ...

is estimated to connect to 10,000 others. * ''Demography:'' The population of

Tuvalu Tuvalu ( or ; formerly known as the Ellice Islands) is an island country and microstate in the Polynesian subregion of Oceania in the Pacific Ocean. Its islands are situated about midway between Hawaii and Australia. They lie east-northeast ...

was 10,544 in 2007. * ''Lexicography:'' 14,500 unique English words occur in the

King James Version The King James Version (KJV), also the King James Bible (KJB) and the Authorized Version, is an Bible translations into English, English translation of the Christian Bible for the Church of England, which was commissioned in 1604 and publis ...

of the Bible. *''Zoology:'' There are approximately 17,500 distinct butterfly species known. * ''Language:'' There are 20,000–40,000 distinct

Chinese character Chinese characters () are logograms developed for the Written Chinese, writing of Chinese. In addition, they have been adapted to write other East Asian languages, and remain a key component of the Japanese writing system where they are k ...

s in more than occasional use. * ''Biology:'' Each human being is estimated to have 20,000 coding genes. * ''Grammar:'' Each regular

verb A verb () is a word (part of speech) that in syntax generally conveys an action (''bring'', ''read'', ''walk'', ''run'', ''learn''), an occurrence (''happen'', ''become''), or a state of being (''be'', ''exist'', ''stand''). In the usual descri ...

in

Cherokee The Cherokee (; chr, ᎠᏂᏴᏫᏯᎢ, translit=Aniyvwiyaʔi or Anigiduwagi, or chr, ᏣᎳᎩ, links=no, translit=Tsalagi) are one of the indigenous peoples of the Southeastern Woodlands of the United States. Prior to the 18th century, t ...

can have 21,262

inflected In linguistic morphology, inflection (or inflexion) is a process of word formation in which a word is modified to express different grammatical categories such as tense, case, voice, aspect, person, number, gender, mood, animacy, and defi ...

forms. * ''War:'' 22,717 Union and Confederate soldiers were killed, wounded, or missing in the

Battle of Antietam The Battle of Antietam (), or Battle of Sharpsburg particularly in the Southern United States, was a battle of the American Civil War fought on September 17, 1862, between Confederate Gen. Robert E. Lee's Army of Northern Virginia and Union G ...

, the bloodiest single day of battle in American history. * ''Computing – Unicode:'' 42,720 characters are encoded in

CJK Unified Ideographs Extension B CJK Unified Ideographs Extension B is a Unicode block A Unicode block is one of several contiguous ranges of numeric character codes ( code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and ...

, the most of any single public-use

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

as of Unicode 14.0 (2021). * ''Aviation:'' , 44,000+ airframes have been built of the

Cessna 172 The Cessna 172 Skyhawk is an American four-seat, single-engine, high wing, fixed-wing aircraft made by the Cessna Aircraft Company.

, the most-produced aircraft in history. * ''Computing - Fonts:'' The maximum possible number of glyphs in a

TrueType TrueType is an outline font standard developed by Apple in the late 1980s as a competitor to Adobe's Type 1 fonts used in PostScript. It has become the most common format for fonts on the classic Mac OS, macOS, and Microsoft Windows operating sy ...

or

OpenType OpenType is a format for scalable computer fonts. It was built on its predecessor TrueType, retaining TrueType's basic structure and adding many intricate data structures for prescribing typographic behavior. OpenType is a registered trademark ...

font is 65,535 (2¹⁶-1), the largest number representable by the 16-bit unsigned integer used to record the total number of glyphs in the font. * ''Computing – Unicode:'' A

plane Plane(s) most often refers to: * Aero- or airplane, a powered, fixed-wing aircraft * Plane (geometry), a flat, 2-dimensional surface Plane or planes may also refer to: Biology * Plane (tree) or ''Platanus'', wetland native plant * ''Planes' ...

contains 65,536 (2¹⁶) code points; this is also the maximum size of a

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

, and the total number of code points available in the obsolete

UCS-2 The Universal Coded Character Set (UCS, Unicode) is a standard set of characters defined by the international standard ISO/IEC 10646, ''Information technology — Universal Coded Character Set (UCS)'' (plus amendments to that standard), whi ...

encoding. * ''Mathematics:''

65,537 65537 is the integer after 65536 (number), 65536 and before 65538. In mathematics 65537 is the largest known prime number of the form 2^ +1 (n = 4). Therefore, a regular polygon, regular 65537-gon, polygon with 65537 sides is constructible polyg ...

is the largest known

Fermat prime In mathematics, a Fermat number, named after Pierre de Fermat, who first studied them, is a positive integer of the form :F_ = 2^ + 1, where ''n'' is a non-negative integer. The first few Fermat numbers are: : 3, 5, 17, 257, 65537, 429496 ...

. * ''Memory:'' , the largest number of decimal places of π that have been recited from

memory Memory is the faculty of the mind by which data or information is encoded, stored, and retrieved when needed. It is the retention of information over time for the purpose of influencing future action. If past events could not be remembered, ...

is 70,030.

10⁵

Woman with long brown hair, close-up view

(;

one hundred thousand 100,000 (one hundred thousand) is the natural number following 99,999 and preceding 100,001. In scientific notation, it is written as 105. Terms for 100,000 In India, Pakistan and South Asia, one hundred thousand is called a lakh, and is wri ...

or a

lakh A lakh (; abbreviated L; sometimes written lac) is a unit in the Indian numbering system equal to one hundred thousand (100,000; scientific notation: 105). In the Indian 2,2,3 convention of digit grouping, it is written as 1,00,000. For ex ...

). * ''Demography:'' The population of

Saint Vincent and the Grenadines Saint Vincent and the Grenadines () is an island country in the Caribbean. It is located in the southeast Windward Islands of the Lesser Antilles, which lie in the West Indies at the southern end of the eastern border of the Caribbean Sea wh ...

was 100,982 in 2009. * ''Biology – Strands of hair on a head:'' The average human head has about 100,000–150,000 strands of

hair Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and f ...

. * ''Literature:'' approximately 100,000 verses (

shloka Shloka or śloka ( sa, श्लोक , from the root , Macdonell, Arthur A., ''A Sanskrit Grammar for Students'', Appendix II, p. 232 (Oxford University Press, 3rd edition, 1927). in a broader sense, according to Monier-Williams's dictionary, is ...

s) in the ''

Mahabharata The ''Mahābhārata'' ( ; sa, महाभारतम्, ', ) is one of the two major Sanskrit epics of ancient India in Hinduism, the other being the ''Rāmāyaṇa''. It narrates the struggle between two groups of cousins in the Kuruk ...

''. * ''Computing – Unicode:'' 144,762 characters (including control characters) encoded in Unicode as of version 14.0 (2021). * ''Language:'' 267,000 words in

James Joyce James Augustine Aloysius Joyce (2 February 1882 – 13 January 1941) was an Irish novelist, poet, and literary critic. He contributed to the modernist avant-garde movement and is regarded as one of the most influential and important writers of ...

's ''

Ulysses Ulysses is one form of the Roman name for Odysseus, a hero in ancient Greek literature. Ulysses may also refer to: People * Ulysses (given name), including a list of people with this name Places in the United States * Ulysses, Kansas * Ulysse ...

''. * ''Computing – Unicode:'' 288,512 code points assigned to a

Unicode block A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...

as of Unicode 14.0. * ''Mathematics:'' 294,000 – The approximate number of entries in The

On-Line Encyclopedia of Integer Sequences The On-Line Encyclopedia of Integer Sequences (OEIS) is an online database of integer sequences. It was created and maintained by Neil Sloane while researching at AT&T Labs. He transferred the intellectual property and hosting of the OEIS to the ...

. * ''Genocide:'' 300,000 people killed in the

Rape of Nanking The Nanjing Massacre (, ja, 南京大虐殺, Nankin Daigyakusatsu) or the Rape of Nanjing (formerly romanized as ''Nanking'') was the mass murder of Chinese civilians in Nanjing, the capital of the Republic of China, immediately after the Ba ...

. * ''Language – English words:'' The

New Oxford Dictionary of English The ''Oxford Dictionary of English'' (''ODE'') is a single-volume English dictionary published by Oxford University Press, first published in 1998 as ''The New Oxford Dictionary of English'' (''NODE''). The word "new" was dropped from the tit ...

contains about 360,000 definitions for

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

word A word is a basic element of language that carries an semantics, objective or pragmatics, practical semantics, meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of w ...

s. * ''Biology – Plants:'' There are approximately 390,000 distinct plant species known, of which approximately 20% (or 78,000) are in risk of extinction. *''Biology – Flowers:'' There are approximately 400,000 distinct flower species on Earth. * ''Literature:'' 564,000 words in ''

War and Peace ''War and Peace'' (russian: Война и мир, translit=Voyna i mir; pre-reform Russian: ; ) is a literary work by the Russian author Leo Tolstoy that mixes fictional narrative with chapters on history and philosophy. It was first published ...

'' by

Leo Tolstoy Count Lev Nikolayevich TolstoyTolstoy pronounced his first name as , which corresponds to the romanization ''Lyov''. () (; russian: link=no, Лев Николаевич Толстой,In Tolstoy's day, his name was written as in pre-refor ...

. * ''Literature:'' 930,000 words in the

King James Version The King James Version (KJV), also the King James Bible (KJB) and the Authorized Version, is an Bible translations into English, English translation of the Christian Bible for the Church of England, which was commissioned in 1604 and publis ...

of the Bible. * ''Mathematics:'' There are 933,120 possible combinations on the

Pyraminx The Pyraminx () is a regular tetrahedron puzzle in the style of Rubik's Cube. It was made and patented by Uwe Mèffert after the original 3 layered Rubik's Cube by Ernő Rubik, and introduced by Tomy Toys of Japan (then the 3rd largest toy co ...

. * ''Computing – Unicode:'' There are 974,530 publicly-assignable code points (i.e., not surrogates, private-use code points, or noncharacters) in Unicode.

10⁶

(; 1000²;

long and short scales The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one

million One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. The word is derived from the early Italian ''millione'' (''milione'' in modern Italian), from ''mille'', "thousand", plus the au ...

) ISO:

mega- Mega is a metric prefix, unit prefix in metric systems of units denoting a factor of one million (106 or 1000000 (number), ). It has the unit symbol M. It was confirmed for use in the International System of Units (SI) in 1960. ''Mega'' comes fro ...

(M) * ''Demography:'' The population of

Riga Riga (; lv, Rīga , liv, Rīgõ) is the capital and largest city of Latvia and is home to 605,802 inhabitants which is a third of Latvia's population. The city lies on the Gulf of Riga at the mouth of the Daugava river where it meets the Ba ...

,

Latvia Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...

was 1,003,949 in 2004, according to

Eurostat Eurostat ('European Statistical Office'; DG ESTAT) is a Directorate-General of the European Commission located in the Kirchberg, Luxembourg, Kirchberg quarter of Luxembourg City, Luxembourg. Eurostat's main responsibilities are to provide statis ...

. * ''Computing –

UTF-8 UTF-8 is a variable-width encoding, variable-length character encoding used for electronic communication. Defined by the Unicode Standard, the name is derived from ''Unicode'' (or ''Universal Coded Character Set'') ''Transformation Format 8-bit'' ...

:'' There are 1,112,064 (2²⁰ + 2¹⁶ - 2¹¹) valid

UTF-8 UTF-8 is a variable-width encoding, variable-length character encoding used for electronic communication. Defined by the Unicode Standard, the name is derived from ''Unicode'' (or ''Universal Coded Character Set'') ''Transformation Format 8-bit'' ...

sequences (excluding overlong sequences and sequences corresponding to code points used for

UTF-16 UTF-16 (16-bit computing, 16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variab ...

surrogates or code points beyond U+10FFFF). * ''Computing –

UTF-16 UTF-16 (16-bit computing, 16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variab ...

/Unicode:'' There are 1,114,112 (2²⁰ + 2¹⁶) distinct values encodable in

UTF-16 UTF-16 (16-bit computing, 16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variab ...

, and, thus (as Unicode is currently limited to the UTF-16 code space), 1,114,112 valid code points in Unicode (1,112,064 scalar values and 2,048 surrogates). *''Ludology – Number of games:'' Approximately 1,181,019 video games have been created as of 2019. * ''Biology – Species:'' The

World Resources Institute The World Resources Institute (WRI) is a global research non-profit organization established in 1982 with funding from the MacArthur Foundation under the leadership of James Gustave Speth. WRI's activities are focused on seven areas: food, fore ...

claims that approximately 1.4 million

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

have been named, out of an unknown number of total species (estimates range between 2 and 100 million species). Some scientists give 8.8 million species as an exact figure. * ''Genocide:'' Approximately 800,000–1,500,000 (1.5 million)

Armenians Armenians ( hy, հայեր, ''hayer'' ) are an ethnic group native to the Armenian highlands of Western Asia. Armenians constitute the main population of Armenia and the ''de facto'' independent Artsakh. There is a wide-ranging diaspora ...

were killed in the

Armenian genocide The Armenian genocide was the systematic destruction of the Armenians in the Ottoman Empire, Armenian people and identity in the Ottoman Empire during World War I. Spearheaded by the ruling Committee of Union and Progress (CUP), it was ...

. * ''Linguistics:'' The number of possible conjugations for each verb in the

Archi language Archi is a Northeast Caucasian language spoken by the Archis in the village of Archib, southern Dagestan, Russia, and the six surrounding smaller villages. It is unusual for its many phonemes and for its contrast between several voiceless v ...

is 1,502,839. * ''Info:'' The

freedb Freedb was a database of compact disc track listings, where all the content was under the GNU General Public License. To look up CD information over the Internet, a client program calculated a hash function from the CD table of contents and used ...

database of CD track listings has around 1,750,000 entries . * ''War:'' 1,857,619 casualties at the

Battle of Stalingrad The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later re ...

. * ''Computing – UTF-8:'' 2,164,864 (2²¹ + 2¹⁶ + 2¹¹ + 2⁷) possible one- to four-byte UTF-8 sequences, if the restrictions on overlong sequences, surrogate code points, and code points beyond U+10FFFF are ''not'' adhered to. (Note that not all of these correspond to unique code points.) * ''Mathematics – Playing cards:'' There are 2,598,960 different 5-card

poker hand In poker, players form sets of five playing cards, called ''hands'', according to the rules of the game. Each hand has a rank, which is compared against the ranks of other hands participating in the showdown to decide who wins the pot. In high ...

s that can be dealt from a standard 52-card deck. * ''Mathematics:'' There are 3,149,280 possible positions for the

Skewb The Skewb () is a combination puzzle and a mechanical puzzle in the style of the Rubik's Cube. It was invented by Tony Durham and marketed by Uwe Mèffert. Although it is cubical in shape, it differs from Rubik's construction in that its axes o ...

. *''Mathematics – Rubik's Cube:'' 3,674,160 is the number of combinations for the

Pocket Cube The 2x2 Rubik's Cube (also known as the Pocket Cube or Mini Cube) is a 2×2×2 version of the Rubik's Cube. The cube consists of 8 pieces, all corners. History In March 1970, Larry D. Nichols invented a 2×2×2 "Puzzle with Pieces Rotatable in G ...

(2×2×2 Rubik's Cube). * ''Geography/Computing – Geographic places:'' The NIMA

GEOnet Names Server The GEOnet Names Server (GNS), sometimes also referred to in official documentation as Geographic Names Data or geonames in domain and email addresses, is a service that provides access to the United States National Geospatial-Intelligence Agency ...

contains approximately 3.88 million named

geographic feature A feature (also called an object or entity), in the context of geography and geographic information science, is a discrete phenomenon that exists at a location in the space and scale of relevance to geography; that is, at or near the surface of E ...

s outside the United States, with 5.34 million names. The USGS

Geographic Names Information System The Geographic Names Information System (GNIS) is a database of name and locative information about more than two million physical and cultural features throughout the United States and its territories, Antarctica, and the associated states of ...

claims to have almost 2 million physical and cultural geographic features within the United States. * ''Computing - Supercomputer hardware:'' 4,981,760 processor cores in the final configuration of the

Tianhe-2 Tianhe-2 or TH-2 (, i.e. 'Milky Way 2') is a 33.86-petaflops supercomputer located in the National Supercomputer Center in Guangzhou, China. It was developed by a team of 1,300 scientists and engineers. It was the world's fastest supercomputer ac ...

supercomputer. * ''Genocide:'' Approximately 5,100,000–6,200,000

Jews Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...

were killed in

the Holocaust The Holocaust, also known as the Shoah, was the genocide of European Jews during World War II. Between 1941 and 1945, Nazi Germany and its collaborators systematically murdered some six million Jews across German-occupied Europe; a ...

. * ''Info – Web sites:'' As of , , the

English Wikipedia The English Wikipedia is, along with the Simple English Wikipedia, one of two English-language editions of Wikipedia, an online encyclopedia. It was founded on January 15, 2001, as Wikipedia's first edition, and, as of , has the most arti ...

contains approximately million articles in the

English language English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the is ...

.

10⁷

(; a

crore A crore (; abbreviated cr) denotes ten million (10,000,000 or 107 in scientific notation) and is equal to 100 lakh in the Indian numbering system. It is written as 1,00,00,000 with the local 2,2,3 style of digit group separators (one lakh is e ...

;

long and short scales The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

:

ten million Ten Million (October 14, 1889 – June 18, 1964) was a minor league baseball player who played for various teams in the Northwestern League in the years prior to World War I. He is best known for his unusual name. Baseball career The Cleveland ...

) * ''Demography:'' The population of

Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...

was 10,085,214 in 2010. * ''Literature:'' 11,206,310 words in ''Devta'' by

Mohiuddin Nawab Mohiuddin Nawab ( ur, ) (September 4, 1930 - February 6, 2016) was a Pakistani novelist, screenwriter, and poet. He is famous for his popular novel series, " Devta" that was episodically and continuously published in Suspense Digest from February ...

, the longest continuously published story known in the history of literature. * ''Genocide'': An estimated 12 million persons shipped from Africa to the New World in the

Atlantic slave trade The Atlantic slave trade, transatlantic slave trade, or Euro-American slave trade involved the transportation by slave traders of enslaved African people, mainly to the Americas. The slave trade regularly used the triangular trade route and i ...

. * ''Mathematics:'' 12,988,816 is the number of domino tilings of an 8×8

checkerboard A checkerboard (American English) or chequerboard (British English; see spelling differences) is a board of checkered pattern on which checkers (also known as English draughts) is played. Most commonly, it consists of 64 squares (8×8) of altern ...

. * ''War:'' 15 to 22 million casualties estimated as a result of

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

. * ''Genocide/Famine:'' 15 million is an estimated lower bound for the death toll of the 1959–1961

Great Chinese Famine The Great Chinese Famine () was a period between 1959 and 1961 in the history of the People's Republic of China (PRC) characterized by widespread famine. Some scholars have also included the years 1958 or 1962. It is widely regarded as the dead ...

, the deadliest known famine in human history. * ''Computing:'' 16,777,216 different

color Color (American English) or colour (British English) is the visual perceptual property deriving from the spectrum of light interacting with the photoreceptor cells of the eyes. Color categories and physical specifications of color are associ ...

s can be generated using the hex code system in

HTML The HyperText Markup Language or HTML is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScri ...

(note that the

trichromatic Trichromacy or trichromatism is the possessing of three independent channels for conveying color information, derived from the three different types of cone cells in the eye. Organisms with trichromacy are called trichromats. The normal expl ...

color vision Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different wavelengths (i.e., different spectral power distributions) independently of light intensity. Color perception is a part of ...

of the

human eye The human eye is a sensory organ, part of the sensory nervous system, that reacts to visible light and allows humans to use visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm. ...

can only distinguish between about an estimated 1,000,000 different colors). * ''Science Fiction'': In

Isaac Asimov yi, יצחק אזימאװ , birth_date = , birth_place = Petrovichi, Russian SFSR , spouse = , relatives = , children = 2 , death_date = , death_place = Manhattan, New York City, U.S. , nationality = Russian (1920–1922)Soviet (192 ...

's

Galactic Empire Galactic empires are a common trope used in science fantasy and science fiction, particularly in works known as 'space operas'. Many authors have either used a galaxy-spanning empire as background or written about the growth and/or decline of s ...

, in 22,500 CE, there are 25,000,000 different inhabited planets in the Galactic Empire, all inhabited by humans in Asimov's "human galaxy" scenario. * ''Genocide/Famine:'' 55 million is an estimated upper bound for the death toll of the Great Chinese Famine. * ''Literature:'' Wikipedia contains a total of around articles in list of Wikipedias, languages as of . * ''War:'' 70 to 85 million casualties estimated as a result of World War II. * ''Mathematics:'' 73,939,133 is the largest right-truncatable prime.

10⁸

(;

long and short scales The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: 100,000,000, one hundred million) * ''Demography:'' The population of the Philippines was 100,981,437 in 2015. * ''Internet – YouTube:'' The number of YouTube channels is estimated to be 113.9 million. * ''Info – Books:'' The British Library claims that it holds over 150 million items. The Library of Congress claims that it holds approximately 148 million items. See ''The Gutenberg Galaxy''. * ''Video gaming:'' , approximately 200 million copies of ''Minecraft'' (the most-sold video game in history) have been sold. * ''Mathematics:'' More than 215,000,000 mathematical constants are collected on the Simon Plouffe, Plouffe's Inverter . * ''Mathematics:'' 275,305,224 is the number of 5×5 normal magic squares, not counting rotations and reflections. This result was found in 1973 by Richard Schroeppel. *''Demography:'' The population of the United States was 328,239,523 in 2019. * ''Mathematics:'' 358,833,097 stellations of the rhombic triacontahedron. * ''Info – Web sites:'' , the Netcraft web survey estimates that there are 525,998,433 (526 million) distinct websites. * ''Astronomy – Cataloged stars:'' The Guide Star Catalog II has entries on 998,402,801 distinct astronomical objects.

10⁹

(; 1000³;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one 1,000,000,000, billion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand million, or one 1,000,000,000, milliard) ISO: giga- (G) * ''Demography:'' The population of Africa reached 1,000,000,000 sometime in 2009. * ''Demographics – India:'' 1,381,000,000 – approximate population of India in 2020. *''Transportation – Cars:'' , there are approximately 1.4 billion cars in the world, corresponding to around 18% of the human population. * ''Demographics – China:'' 1,439,000,000 – approximate population of the People's Republic of China in 2020. *''Internet – Google:'' There are more than 1,500,000,000 active Gmail users globally. * ''Internet:'' Approximately 1,500,000,000 active users were on Facebook as of October 2015. * ''Computing – Computational limit of a 32-bit Central processing unit, CPU'': 2147483647, 2,147,483,647 is equal to 2³¹−1, and as such is the largest number which can fit into a signed (two's complement) 32-bit integer on a computer. * ''Computing – UTF-8:'' 2,147,483,648 (2³¹) possible code points (U+0000 - U+7FFFFFFF) in the pre-2003 version of

UTF-8 UTF-8 is a variable-width encoding, variable-length character encoding used for electronic communication. Defined by the Unicode Standard, the name is derived from ''Unicode'' (or ''Universal Coded Character Set'') ''Transformation Format 8-bit'' ...

(including five- and six-byte sequences), before the UTF-8 code space was limited to the much smaller set of values encodable in

UTF-16 UTF-16 (16-bit computing, 16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid code points of Unicode (in fact this number of code points is dictated by the design of UTF-16). The encoding is variab ...

. * ''Biology – base pairs in the genome:'' approximately 3.3

base pair A base pair (bp) is a fundamental unit of double-stranded nucleic acids consisting of two nucleobases bound to each other by hydrogen bonds. They form the building blocks of the DNA double helix and contribute to the folded structure of both DNA ...

s in the human genome. * ''Linguistics'': 3,400,000,000 – the total number of speakers of Indo-European languages, of which 2,400,000,000 are native speakers; the other 1,000,000,000 speak Indo-European languages as a second language. * ''Mathematics'' and ''computing'': 4294967295, 4,294,967,295 (2³² − 1), the product of the five known Fermat primes and the maximum value for a 32-bit Integer (computer science), unsigned integer in computing. * ''Computing – IPv4:'' 4,294,967,296 (2³²) possible unique IP addresses. * ''Computing:'' 4,294,967,296 – the number of bytes in 4 gibibytes; in computation, 32-bit computers can directly access 2³² units (bytes) of address space, which leads directly to the 4-gigabyte limit on main memory. * ''Mathematics:'' 4,294,967,297 is a Fermat number and semiprime. It is the smallest number of the form

2^+1

which is not a prime number. * ''Demographics – world population:'' 8,000,000,000 – Estimated population for the world as of November 2022.

10¹⁰

(;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: ten 1,000,000,000, billion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: ten thousand million, or ten 1,000,000,000, milliard) * ''Biology – bacteria in the human body:'' There are roughly 10¹⁰ bacteria in the human mouth. * ''Computing – web pages:'' approximately 5.6 web pages indexed by Google as of 2010.

10¹¹

(;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one hundred 1,000,000,000, billion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: hundred thousand million, or hundred 1,000,000,000, milliard) * ''Astronomy:'' There are 100 billion planets located in the Milky Way. * ''Biology – Neurons in the brain:'' approximately (1±0.2) × 10¹¹

neuron A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron is the main component of nervous tissue in all animals except sponges and placozoa. N ...

s in the

human brain The human brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the ...

. * ''Medicine:'' The United States Food and Drug Administration requires a minimum of 3 x 10¹¹ (300 billion) platelets per apheresis unit. * ''Paleodemography – Number of humans that have ever lived'': approximately (1.2±0.3) × 10¹¹ live births of anatomically modern humans since the beginning of the Upper Paleolithic. * ''Astronomy – stars in our galaxy:'' of the order of 10¹¹ stars in the Milky Way galaxy.

10¹²

(; 1000⁴;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one trillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one billion) ISO: tera- (T) * ''Astronomy:'' Andromeda Galaxy, which is part of the same Local Group as Milky Way, our galaxy, contains about 10¹² stars. * ''Biology – Bacteria on the human body:'' The surface of the human body houses roughly 10¹² bacteria. * ''Astronomy – Galaxies'': A 2016 estimate says there are 2 × 10¹² list of galaxies, galaxies in the observable universe. * ''Biology – Blood cells in the human body:'' The average human body has 2.5 × 10¹² red blood cells. * ''Biology:'' An estimate says there were 3.04 × 10¹² trees on Earth in 2015. * ''Marine biology'': 3,500,000,000,000 (3.5 × 10¹²) – estimated population of fish in the ocean. IC 1101 in Abell 2029 (hst 06228 03 wfpc2 f702w pc)

IC 1101 in Abell 2029 (hst 06228 03 wfpc2 f702w pc)

* ''Mathematics'': 7,625,597,484,987 – a number that often appears when dealing with Exponentiation, powers of 3. It can be expressed as

19683^3

,

27^9

,

3^

,

3^

and ³3 or when using Knuth's up-arrow notation it can be expressed as

3 \uparrow\uparrow 3

and

3 \uparrow\uparrow\uparrow 2

. * ''Astronomy:'' A light-year, as defined by the International Astronomical Union (IAU), is the distance that light travels in a vacuum in one year, which is equivalent to about 9.46 Orders of magnitude (numbers)#1012, trillion kilometers (). * ''Mathematics:'' 10¹³ – The approximate number of known non-trivial zeros of the Riemann zeta function . * ''Mathematics – Known digits of π:'' , the number of known digits of π is 31,415,926,535,897 (the integer part of π). * ''Biology'' – approximately 10¹⁴ synapses in the human brain. * ''Astronomy:'' IC 1101, a supergiant elliptical galaxy located inside the Abell 2029, Abell 2029 cluster, is estimated to have approximately 100 trillion (10¹⁴) stars inside the galaxy, making it the largest known galaxy in the Observable universe, universe. * ''Biology – Cells in the human body:'' The human body consists of roughly 10¹⁴ cell (biology), cells, of which only 10¹³ are human. The remaining 90% non-human cells (though much smaller and constituting much less mass) are human flora, bacteria, which mostly reside in the gastrointestinal tract, although the skin is also covered in bacteria. * ''Cryptography:'' 150,738,274,937,250 configurations of the plug-board of the Enigma machine used by the Germans in WW2 to encode and decode messages by cipher. * ''Computing – MAC-48:'' 281,474,976,710,656 (2⁴⁸) possible unique physical addresses. * ''Mathematics:'' 953,467,954,114,363 is the largest known Motzkin prime.

10¹⁵

(; 1000⁵;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one Names of large numbers, quadrillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand billion, or one billiard) ISO: peta- (P) * ''Biology – Insects'': 1,000,000,000,000,000 to 10,000,000,000,000,000 (10¹⁵ to 10¹⁶) – The estimated total number of ants on Earth alive at any one time (their Biomass (ecology), biomass is approximately equal to the total biomass of the human, human species). * ''Computing:'' 9,007,199,254,740,992 (2⁵³) – number until which all integer values can exactly be represented in IEEE double precision floating-point format. * ''Mathematics:'' 48,988,659,276,962,496 is the fifth taxicab number. * ''Science Fiction'': In

Isaac Asimov yi, יצחק אזימאװ , birth_date = , birth_place = Petrovichi, Russian SFSR , spouse = , relatives = , children = 2 , death_date = , death_place = Manhattan, New York City, U.S. , nationality = Russian (1920–1922)Soviet (192 ...

's

Galactic Empire Galactic empires are a common trope used in science fantasy and science fiction, particularly in works known as 'space operas'. Many authors have either used a galaxy-spanning empire as background or written about the growth and/or decline of s ...

, in what we call 22,500 CE, there are 25,000,000 different inhabited planets in the Galactic Empire, all inhabited by humans in Asimov's "human galaxy" scenario, each with an average population of 2,000,000,000, thus yielding a total Galactic Empire population of approximately 50,000,000,000,000,000. * ''Science Fiction'': There are approximately 10¹⁷ sentient beings in the ''Star Wars'' galaxy. * ''Cryptography:'' There are 2⁵⁶ = 72,057,594,037,927,936 different possible keys in the obsolete 56-bit Data Encryption Standard, DES symmetric cipher.

10¹⁸

(; 1000⁶;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one quintillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one trillion) ISO: exa- (E) * ''Mathematics:'' Goldbach's conjecture has been Goldbach's conjecture#Verified results, verified for all ''n'' ≤ 4 by a project which computed all prime numbers up to that limit. * ''Computing – Manufacturing:'' An estimated 6 transistors were produced worldwide in 2008. * ''Computing – Computational limit of a 64-bit Central processing unit, CPU'': 9,223,372,036,854,775,807 (about 9.22) is equal to 2⁶³−1, and as such is the largest number which can fit into a signed (two's complement) 64-bit integer on a computer. * ''Mathematics – NCAA Men's Division I Basketball Championship, NCAA basketball tournament:'' There are 9,223,372,036,854,775,808 (2⁶³) possible ways to enter the Bracketology, bracket. * ''Mathematics – Radix, Bases:'' 9,439,829,801,208,141,318 (≈9.44) is the 10th and (by conjecture) largest number with more than one digit that can be written from base 2 to base 18 using only the digits 0 to 9, meaning the digits for 10 to 17 are not needed in bases above 10. * ''Biology – Insects:'' It has been estimated that the insect population of the Earth is about 10¹⁹. * ''Mathematics – Answer to the wheat and chessboard problem:'' When doubling the grains of wheat on each successive square of a chessboard, beginning with one grain of wheat on the first square, the final number of grains of wheat on all 64 squares of the chessboard when added up is 2⁶⁴−1 = 18,446,744,073,709,551,615 (≈1.84). * ''Mathematics – Legends:'' The Tower of Brahma legend tells about a Hindu temple containing a large room with three posts, on one of which are 64 golden discs, and the object of the mathematical game is for the Brahmins in this temple to move all of the discs to another pole so that they are in the same order, never placing a larger disc above a smaller disc, moving only one at a time. Using the simplest algorithm for moving the disks, it would take 2⁶⁴−1 = 18,446,744,073,709,551,615 (≈1.84) turns to complete the task (the same number as the wheat and chessboard problem above). * ''Computing – IPv6:'' 18,446,744,073,709,551,616 (2⁶⁴; ≈1.84) possible unique /64 subnetworks. * ''Mathematics – Rubik's Cube:'' There are 43,252,003,274,489,856,000 (≈4.33) different positions of a 3×3×3 Rubik's Cube. * ''Password strength:'' Usage of the 95-character set found on standard computer keyboards for a 10-character password yields a computationally intractability (complexity), intractable 59,873,693,923,837,890,625 (95¹⁰, approximately 5.99) permutations. * ''Economics:'' Hyperinflation in Zimbabwe estimated in February 2009 by some economists at 10 sextillion percent, or a factor of 10²⁰.

10²¹

Sudoku Puzzle by L2G-20050714 solution standardized layout

(; 1000⁷;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one sextillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand trillion, or one trilliard) ISO: zetta- (Z) * ''Geo – Grains of sand:'' All the world's beaches combined have been estimated to hold roughly 10²¹ grains of sand. * ''Computing – Manufacturing:'' Intel predicted that there would be 1.2 transistors in the world by 2015 and Forbes estimated that 2.9 transistors had been shipped up to 2014. * ''Mathematics – Sudoku:'' There are 6,670,903,752,021,072,936,960 (≈6.7) 9×9 sudoku grids. * ''Astronomy – Stars:'' 70 sextillion = 7, the estimated number of stars within range of telescopes (as of 2003). * ''Astronomy – Stars:'' in the range of 10²³ to 10²⁴ stars in the observable universe. * ''Mathematics:'' 146,361,946,186,458,562,560,000 (≈1.5) is the fifth unitary perfect number. * ''Mathematics:'' 357,686,312,646,216,567,629,137 (≈3.6) is the largest left-truncatable prime. * ''Chemistry – Physics:'' The Avogadro constant () is the number of constituents (e.g. atoms or molecules) in one mole (unit), mole of a substance, defined for convenience as expressing the order of magnitude separating the molecular from the macroscopic scale.

10²⁴

(; 1000⁸;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one septillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one quadrillion) ISO: yotta- (Y) * ''Mathematics:'' 2,833,419,889,721,787,128,217,599 (≈2.8) is the fifth Woodall prime. * ''Mathematics:'' 3,608,528,850,368,400,786,036,725 (≈3.6) is the largest polydivisible number. * ''Mathematics:'' 2⁸⁶ = 77,371,252,455,336,267,181,195,264 is the largest known power of two not containing the digit '0' in its decimal representation.

10²⁷

(; 1000⁹;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one octillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand quadrillion, or one quadrilliard) ISO: ronna- (R) * ''Biology – Atoms in the human body:'' the average human body contains roughly 7 atoms. * ''Mathematics – Poker:'' the number of unique combinations of hands and shared cards in a 10-player game of Texas hold 'em is approximately 2.117.

10³⁰

(; 1000¹⁰;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one nonillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one quintillion) ISO: quetta- (Q) * ''Biology – Bacterial cells on Earth:'' The number of bacterial cells on Earth is estimated at 5,000,000,000,000,000,000,000,000,000,000, or 5 × 10³⁰. * ''Mathematics:'' 5,000,000,000,000,000,000,000,000,000,027 is the largest v:quasi-minimal prime, quasi-minimal prime. * ''Mathematics:'' The number of partition of a set, partitions of 1000 is 24,061,467,864,032,622,473,692,149,727,991. * ''Mathematics:'' 3⁶⁸ = 278,128,389,443,693,511,257,285,776,231,761 is the largest known power of three not containing the digit '0' in its decimal representation. * ''Mathematics:'' 2¹⁰⁸ = 324,518,553,658,426,726,783,156,020,576,256 is the largest known power of two not containing the digit '9' in its decimal representation.

10³³

(; 1000¹¹;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one decillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand quintillion, or one quintilliard) * ''Mathematics – Alexander's Star:'' There are 72,431,714,252,715,638,411,621,302,272,000,000 (about 7.24) different positions of Alexander's Star.

10³⁶

(; 1000¹²;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one undecillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one sextillion) * ''Physics'': ''Coulomb's constant, k_e Elementary charge, e² / Gravitational constant, Gm²'', the ratio of the electromagnetic force, electromagnetic to the gravitational forces between two protons, is roughly 10³⁶. * ''Mathematics:'' 2^2⁷-1-1 = 170,141,183,460,469,231,731,687,303,715,884,105,727 (≈1.7) is the largest known double Mersenne prime. * ''Computing:'' 2¹²⁸ = 340,282,366,920,938,463,463,374,607,431,768,211,456 (≈3.40282367), the theoretical maximum number of Internet addresses that can be allocated under the IPv6 addressing system, one more than the largest value that can be represented by a single-precision IEEE floating-point value, the total number of different Universally Unique Identifiers (UUIDs) that can be generated. * ''Cryptography:'' 2¹²⁸ = 340,282,366,920,938,463,463,374,607,431,768,211,456 (≈3.40282367), the total number of different possible keys in the Advanced Encryption Standard, AES 128-bit key space (cryptography), key space (symmetric cipher).

10³⁹

(; 1000¹³;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one duodecillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one thousand sextillion, or one sextilliard) * ''Cosmology:'' The Eddington–Dirac number is roughly 10⁴⁰. * ''Mathematics:'' Primorial, 97# × 2⁵ × 3³ × 5 × 7 = 69,720,375,229,712,477,164,533,808,935,312,303,556,800 (≈6.97) is the

least common multiple In arithmetic and number theory, the least common multiple, lowest common multiple, or smallest common multiple of two integers ''a'' and ''b'', usually denoted by lcm(''a'', ''b''), is the smallest positive integer that is divisible by bot ...

of every integer from 1 to 100.

10⁴² to 10¹⁰⁰

(; 1000¹⁴;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: one tredecillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: one septillion) * ''Mathematics:'' 141×2¹⁴¹+1 = 393,050,634,124,102,232,869,567,034,555,427,371,542,904,833 (≈3.93) is the second Cullen prime. * ''Mathematics:'' There are 7,401,196,841,564,901,869,874,093,974,498,574,336,000,000,000 (≈7.4) possible permutations for the Rubik's Revenge (4×4×4 Rubik's Cube). ChessStartingPosition

* ''Chess'': 4.52 is a proven upper bound for the number of legal chess positions. * ''Geo'': 1.33 is the estimated number of atoms in Earth. * ''Mathematics:'' 2¹⁶⁸ = 374,144,419,156,711,147,060,143,317,175,368,453,031,918,731,001,856 is the largest known power of two which is not Pandigital number, pandigital: There is no digit '2' in its decimal representation. * ''Mathematics:'' 3¹⁰⁶ = 375,710,212,613,636,260,325,580,163,599,137,907,799,836,383,538,729 is the largest known power of three which is not pandigital: There is no digit '4'. * ''Mathematics:'' 808,017,424,794,512,875,886,459,904,961,710,757,005,754,368,000,000,000 (≈8.08) is the Order (group theory), order of the monster group. * ''Cryptography:'' 2¹⁹² = 6,277,101,735,386,680,763,835,789,423,207,666,416,102,355,444,464,034,512,896 (6.27710174), the total number of different possible keys in the Advanced Encryption Standard, AES 192-bit key space (cryptography), key space (symmetric cipher). * ''Cosmology:'' 8 is roughly the number of Planck time intervals since the universe is theorised to have been created in the Big Bang 13.799 ± 0.021 1000000000 (number), billion years ago. * ''Cosmology:'' 1 is Archimedes' estimate in ''The Sand Reckoner'' of the total number of grains of sand that could fit into the entire cosmos, the diameter of which he estimated in stadion (unit), stadia to be what we call 2 light-years. * ''Mathematics – Cards:'' 52factorial, ! = 80,658,175,170,943,878,571,660,636,856,403,766,975,289,505,440,883,277,824,000,000,000,000 (≈8.07) – the number of ways to order the Playing card, cards in a 52-card deck. * ''Mathematics:'' There are ≈1.01×10⁶⁸ possible combinations for the Megaminx. * ''Mathematics:'' 1,808,422,353,177,349,564,546,512,035,512,530,001,279,481,259,854,248,860,454,348,989,451,026,887 (≈1.81) – The largest known prime factor found by Lenstra elliptic-curve factorization, ECM factorization . * ''Mathematics:'' There are 282,870,942,277,741,856,536,180,333,107,150,328,293,127,731,985,672,134,721,536,000,000,000,000,000 (≈2.83) possible permutations for the Professor's Cube (5×5×5 Rubik's Cube). * ''Cryptography:'' 2²⁵⁶ = 115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936 (≈1.15792089), the total number of different possible keys in the Advanced Encryption Standard, AES 256-bit key space (cryptography), key space (symmetric cipher). * ''Cosmology:'' Various sources estimate the total number of fundamental particles in the observable universe to be within the range of 10⁸⁰ to 10⁸⁵.WMAP- Content of the Universe
. Map.gsfc.nasa.gov (2010-04-16). Retrieved on 2011-05-01. However, these estimates are generally regarded as guesswork. (Compare the Eddington number, the estimated total number of protons in the observable universe.) * ''Computing:'' 9.999 999 is equal to the largest value that can be represented in the IEEE decimal32 floating-point format. * ''Computing:'' 69! (roughly 1.7112245), is the highest factorial value that can be represented on a calculator with two digits for powers of ten without overflow. * ''Mathematics:'' One googol, 1, 1 followed by one hundred zeros, or 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

10¹⁰⁰ (one googol) to 10¹⁰⁰⁰

(;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: ten duotrigintillion;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: ten thousand sexdecillion, or ten sexdecillard) * ''Mathematics:'' There are 157 152 858 401 024 063 281 013 959 519 483 771 508 510 790 313 968 742 344 694 684 829 502 629 887 168 573 442 107 637 760 000 000 000 000 000 000 000 000 (≈1.57) distinguishable permutations of the V-Cube 6 (6×6×6 Rubik's Cube). * ''Chess:'' Shannon number, 10¹²⁰, a lower bound of the game-tree complexity of chess. * ''Physics:'' 10¹²⁰, Cosmological constant problem, discrepancy between the observed value of the cosmological constant and a naive estimate based on Quantum Field Theory and the Planck energy. * ''Physics:'' 8, ratio of the mass-energy in the observable universe to the energy of a photon with a wavelength the size of the observable universe. * ''Mathematics:'' 19 568 584 333 460 072 587 245 340 037 736 278 982 017 213 829 337 604 336 734 362 294 738 647 777 395 483 196 097 971 852 999 259 921 329 236 506 842 360 439 300 (≈1.96) is the period of Fermat pseudoprime, primary pretenders. * ''History – Religion:'' Asaṃkhyeya is a Buddhism, Buddhist name for the number 10¹⁴⁰. It is listed in the Avatamsaka Sutra and metaphorically means "innumerable" in the Sanskrit language of History of India, ancient India. * ''Xiangqi:'' 10¹⁵⁰, an estimation of the game-tree complexity of xiangqi. * ''Mathematics:'' There are 19 500 551 183 731 307 835 329 126 754 019 748 794 904 992 692 043 434 567 152 132 912 323 232 706 135 469 180 065 278 712 755 853 360 682 328 551 719 137 311 299 993 600 000 000 000 000 000 000 000 000 000 000 000 (≈1.95) distinguishable permutations of the V-Cube 7 (7×7×7 Rubik's Cube). FloorGoban

* ''Go:'' There are 208 168 199 381 979 984 699 478 633 344 862 770 286 522 453 884 530 548 425 639 456 820 927 419 612 738 015 378 525 648 451 698 519 643 907 259 916 015 628 128 546 089 888 314 427 129 715 319 317 557 736 620 397 247 064 840 935 (≈2.08) legal positions in the game of Go. See Go and mathematics. * ''Economics:'' The annualized rate of the Hungarian pengő#Hyperinflation, hyperinflation in Hungary in 1946 was estimated to be 2.9%. It was the most extreme case of hyperinflation ever recorded. * ''Board games:'' 3.457, number of ways to arrange the tiles in English-language Scrabble, English Scrabble on a standard 15-by-15 Scrabble board. * ''Physics:'' 10¹⁸⁶, approximate number of Planck volumes in the observable universe. * ''Shogi:'' 10²²⁶, an estimation of the game-tree complexity of shogi. * ''Physics:'' 7, approximate spacetime volume of the history of the observable universe in Planck units. * ''Computing:'' 1.797 693 134 862 315 807 is approximately equal to the largest value that can be represented in the IEEE double precision floating-point format. * ''Computing:'' (10 – 10⁻¹⁵) is equal to the largest value that can be represented in the IEEE decimal64 floating-point format. * ''Mathematics:'' Primorial, 997# × 31# × 2⁵ × 3⁴ × 5⁴ × 7 = 7 128 865 274 665 093 053 166 384 155 714 272 920 668 358 861 885 893 040 452 001 991 154 324 087 581 111 499 476 444 151 913 871 586 911 717 817 019 575 256 512 980 264 067 621 009 251 465 871 004 305 131 072 686 268 143 200 196 609 974 862 745 937 188 343 705 015 434 452 523 739 745 298 963 145 674 982 128 236 956 232 823 794 011 068 809 262 317 708 861 979 540 791 247 754 558 049 326 475 737 829 923 352 751 796 735 248 042 463 638 051 137 034 331 214 781 746 850 878 453 485 678 021 888 075 373 249 921 995 672 056 932 029 099 390 891 687 487 672 697 950 931 603 520 000 (≈7.13) is the

least common multiple In arithmetic and number theory, the least common multiple, lowest common multiple, or smallest common multiple of two integers ''a'' and ''b'', usually denoted by lcm(''a'', ''b''), is the smallest positive integer that is divisible by bot ...

of every integer from 1 to 1000.

10¹⁰⁰⁰ to 10^10¹⁰⁰ (one googolplex)

* ''Mathematics:'' There are approximately 1.869 distinguishable permutations of the world's largest Rubik's cube (33×33×33). * ''Computing:'' 1.189 731 495 357 231 765 05 is approximately equal to the largest value that can be represented in the IEEE 80-bit x86 extended precision floating-point format. * ''Computing:'' 1.189 731 495 357 231 765 085 759 326 628 007 0 is approximately equal to the largest value that can be represented in the IEEE quadruple-precision floating-point format. * ''Computing:'' (10 – 10⁻³³) is equal to the largest value that can be represented in the IEEE decimal128 floating-point format. * ''Computing:'' 10^10,000 − 1 is equal to the largest value that can be represented in Windows Phone's calculator. * ''Mathematics:'' 2638⁴⁴⁰⁵ + 4405²⁶³⁸ is a 15,071-digit Leyland number, Leyland prime; the largest which has been proven . * ''Mathematics:'' 3,756,801,695,685 × 2^666,669 ± 1 are 200,700-digit twin primes; the largest known . * ''Mathematics:'' 18,543,637,900,515 × 2^666,667 − 1 is a 200,701-digit Sophie Germain prime; the largest known . * ''Mathematics:'' approximately 7.76 × 10^206,544 cattle in the smallest herd which satisfies the conditions of Archimedes's cattle problem. * ''Mathematics:'' 10^474,500 + 999 × 10^237,249 + 1 is a 474,501-digit palindromic prime, the largest known . * ''Mathematics:'' 2,996,863,034,895 × 2^1,290,000±1 are 388,342-digit twin primes; the largest known . * ''Mathematics:'' 1,098,133# – 1 is a 476,311-digit primorial prime; the largest known . * ''Mathematics:'' 208,003! − 1 is a 1,015,843-digit factorial prime; the largest known . * ''Mathematics – Literature:'' Jorge Luis Borges' Library of Babel contains at least 25^1,312,000 ≈ 1.956 × 10^1,834,097 books (this is a lower bound). * ''Mathematics:'' 4 × 72^1,119,849 − 1 is the smallest prime of the form 4×72^''n''−1 * ''Mathematics:'' (2^15,135,397+1)/3 is a 4,556,209-digit Wagstaff prime, Wagstaff probable prime, the largest known . * ''Mathematics:'' 1,059,094^1,048,576 + 1 is a 6,317,602-digit Generalized Fermat prime, the largest known . * ''Mathematics:'' (10^8,177,207−1)/9 is a 8,177,207-digit probable prime, the largest known . * ''Mathematics:'' 10,223 × 2^31,172,165 + 1 is a 9,383,761-digit Proth prime, the largest known Proth prime and non-Mersenne prime . Digits in largest prime found as a function of time

Digits in largest prime found as a function of time

* ''Mathematics:'' 2^82,589,933 − 1 is a 24,862,048-digit Mersenne prime; the largest known prime of any kind .Chris Caldwell
The Top Twenty: Largest Known Primes
at The Prime Pages. * ''Mathematics:'' 2^82,589,932 × (2^82,589,933 − 1) is a 49,724,095-digit perfect number, the largest known as of 2020. * ''Mathematics – History:'' 10^8×10¹⁶, largest named number in Archimedes' ''The Sand Reckoner, Sand Reckoner''. * ''Mathematics:'' 10^googol (

10^

), a googolplex. A number 1 followed by 1 googol zeros. Carl Sagan has estimated that 1 googolplex, fully written out, would not fit in the observable universe because of its size, while also noting that one could also write the number as 10^10¹⁰⁰.

Larger than 10^10¹⁰⁰

(One googolplex; 10^googol;

short scale The long and short scales are two of several naming systems for integer power of 10, powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one m ...

: googolplex;

long scale The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes. For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the ...

: googolplex) * ''Mathematics – Literature:'' The number of different ways in which the books in Jorge Luis Borges' The Library of Babel, Library of Babel can be arranged is approximately

10^

, the factorial of the number of books in the Library of Babel. * ''Cosmology:'' In Chaotic Inflation theory, chaotic inflation theory, proposed by physicist Andrei Linde, our universe is one of many other universes with different physical constants that originated as part of our local section of the Multiverse#Bubble theory, multiverse, owing to a vacuum that had not decayed to its ground state. According to Linde and Vanchurin, the total number of these universes is about

10^

. * ''Mathematics:''

10^

, order of magnitude of an upper bound that occurred in a Skewes' number, proof of Skewes (this was later estimated to be closer to 1.397 × 10³¹⁶). *''Cosmology:'' The estimated number of Planck time, Planck time units for quantum fluctuations and quantum tunnelling, tunnelling to generate a new Big Bang is estimated to be

10^

. * ''Mathematics:''

10^

, a number in Names of large numbers#The googol family, the googol family called a googolplexplex, googolplexian, or googolduplex. 1 followed by a googolplex zeros, or 10^googolplex *''Cosmology:'' The uppermost estimate to the size of the entire universe is approximately

10^

times that of the observable universe. * ''Mathematics:''

10^

, order of magnitude of another upper bound in a proof of Stanley Skewes, Skewes. * ''Mathematics:''

10^

, a number in Names of large numbers#The googol family, the googol family called a googolplexplexplex, googolplexianth, or googoltriplex. 1 followed by a googolduplex zeros, or 10^googolduplex * ''Mathematics:'' Steinhaus' Steinhaus–Moser notation#Mega, mega lies between 10[4]257 and 10[4]258 (where ''a''[''n'']''b'' is hyperoperation). * ''Mathematics:'' Moser's number, "2 in a mega-gon" in Steinhaus–Moser notation, is approximately equal to 10[10[4]257]10, the last four digits are ...1056. * ''Mathematics:'' Graham's number, the last ten digits of which are ...2464195387, equals 3[3[3[...3[3[3[6]3+2]3+2]3...]3+2]3+2]3 with 64 levels of brackets. Arises as an upper bound solution to a problem in Ramsey theory. Representation in powers of 10 would be impractical (the number of 10s in the power tower

10^

would be virtually indistinguishable from the number itself). * ''Mathematics:'' Kruskal's tree theorem, TREE(3): appears in relation to a theorem on trees in graph theory. Representation of the number is difficult, but one weak lower bound is ''A''^{''A''(187196)}(1), where A(n) is a version of the Ackermann function. * ''Mathematics:'' Friedman's SSCG function, SSCG(3): appears in relation to the Robertson–Seymour theorem. Known to be greater than TREE(3). * ''Mathematics:'' Transcendental integers: a set of numbers defined in 2000 by Harvey Friedman, appears in proof theory. * ''Mathematics:'' Rayo's number is a large number named after Agustín Rayo which has been claimed to be the largest number to have ever been named. It was originally defined in a "big number duel" at Massachusetts Institute of Technology, MIT on 26 January 2007.

References

External links

* Seth Lloyd's pape
''Computational capacity of the universe''
provides a number of interesting dimensionless quantities.

* {{DEFAULTSORT:Orders Of Magnitude (Numbers) Orders of magnitude, Numbers

Smaller than (one googolth)

10−100 to 10−30

10−30

10−27

10−24

10−21

10−18

10−15

10−12

10−9

10−6

10−3

10−2

10−1

100

101

102

103

104

105

106

107

108

109

1010

1011

1012

1015

1018

1021

1024

1027

1030

1033

1036

1039

1042 to 10100

10100 (one googol) to 101000

101000 to 1010100 (one googolplex)

Larger than 1010100

See also

References

External links

10⁻¹⁰⁰ to 10⁻³⁰

10⁻³⁰

10⁻²⁷

10⁻²⁴

10⁻²¹

10⁻¹⁸

10⁻¹⁵

10⁻¹²

10⁻⁹

10⁻⁶

10⁻³

10⁻²

10⁻¹

10⁰

10¹

10²

10³

10⁴

10⁵

10⁶

10⁷

10⁸

10⁹

10¹⁰

10¹¹

10¹²

10¹⁵

10¹⁸

10²¹

10²⁴

10²⁷

10³⁰

10³³

10³⁶

10³⁹

10⁴² to 10¹⁰⁰

10¹⁰⁰ (one googol) to 10¹⁰⁰⁰

10¹⁰⁰⁰ to 10^10¹⁰⁰ (one googolplex)

Larger than 10^10¹⁰⁰