5 (five) is a

^{2}) + 1.
While _{''n''} is a _{5}, the

^{3}, if the exponent is odd, then the hundreds digit is 1; instead, if it is even, the hundreds digit is 6.
In fifth powers, ends in the same digit as .

object

NGC 5, a apparent magnitude, magnitude 13 spiral galaxy in the constellation Andromeda (constellation), Andromeda. *The Roman numeral V stands for dwarfs (main sequence stars) in the stellar classification, Yerkes spectral classification scheme. *The Roman numeral V (usually) stands for the fifth-discovered satellite of a planet or minor planet (e.g. Amalthea (moon), Jupiter V). *There are five Lagrangian points in a two-body system.

The Number 5

The Positive Integer 5

{{DEFAULTSORT:5 (Number) Integers 5 (number)

number
A number is a mathematical object
A mathematical object is an abstract concept arising in mathematics.
In the usual language of mathematics, an ''object'' is anything that has been (or could be) formally defined, and with which one may do deduct ...

, numeral
A numeral is a figure, symbol, or group of figures or symbols denoting a number. It may refer to:
* Numeral system used in mathematics
* Numeral (linguistics), a part of speech denoting numbers (e.g. ''one'' and ''first'' in English)
* Numerical di ...

and digit
Digit may refer to:
Mathematics and science
* Numerical digit, as used in mathematics or computer science
** Arabic numerals, the most common modern representation of numerical digits
* Digit (anatomy), one of several most distal parts of a limbâ ...

. It is the natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and total order, ordering (as in "this is the ''third'' largest city in the country"). In common mathematical terminology, w ...

following and preceding , and is a prime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime ...

. It has attained significance throughout history in part because typical humans have five digit
Digit may refer to:
Mathematics and science
* Numerical digit, as used in mathematics or computer science
** Arabic numerals, the most common modern representation of numerical digits
* Digit (anatomy), one of several most distal parts of a limbâ ...

s on each hand.
In mathematics

Five is the thirdprime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime ...

. Since it can be written as , five is classified as a Fermat prime
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers ( and ), formulas and related structures (), shapes and spaces in which they are contained (), and quantities and their changes ( and ). There is no gen ...

; therefore, a regular polygon
In , a regular polygon is a that is (all angles are equal in measure) and (all sides have the same length). Regular polygons may be either or . In the , a sequence of regular polygons with an increasing number of sides approximates a , if the ...

with 5 sides (a regular pentagon
In geometry, a pentagon (from the Greek language, Greek Ï€ÎÎ½Ï„Îµ ''pente'' meaning ''five'' and Î³Ï‰Î½Î¯Î± ''gonia'' meaning ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple polygon, simple pentagon is ...

) is constructible with compass and an unmarked straightedge. Five is the third Sophie Germain prime
In number theory
Number theory (or arithmetic or higher arithmetic in older usage) is a branch of devoted primarily to the study of the s and . German mathematician (1777â€“1855) said, "Mathematics is the queen of the sciencesâ€”and number th ...

, the first safe prime
In number theory
Number theory (or arithmetic or higher arithmetic in older usage) is a branch of devoted primarily to the study of the s and . German mathematician (1777â€“1855) said, "Mathematics is the queen of the sciencesâ€”and number th ...

, the third Catalan number
In combinatorial mathematics
Combinatorics is an area of mathematics primarily concerned with counting, both as a means and an end in obtaining results, and certain properties of finite set, finite Mathematical structure, structures. It is ...

, and the third Mersenne prime
A Mersenne prime is a prime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a compo ...

exponent. Five is the first Wilson prime
A Wilson prime, named after English
English usually refers to:
* English language
English is a West Germanic languages, West Germanic language first spoken in History of Anglo-Saxon England, early medieval England, which has eventually ...

and the third factorial prime
A factorial prime is a prime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a comp ...

, also an alternating factorial In mathematics, an alternating factorial is the absolute value of the alternating sum of the first ''n'' factorials of positive integers.
This is the same as their sum, with the odd-indexed factorials multiplied by -1 (number), −1 if ''n'' is ...

. Five is the first good prime A good prime is a prime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite ...

. It is an Eisenstein prime
In mathematics, an Eisenstein prime is an Eisenstein integer
: z = a + b\,\omega, \quad \text \quad \omega = e^,
that is irreducible element, irreducible (or equivalently prime element, prime) in the ring-theoretic sense: its only Eisenstein ...

with no imaginary part and real part of the form . It is also the only number that is part of more than one pair of twin prime
A twin prime is a prime number that is either 2 less or 2 more than another prime numberâ€”for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin pri ...

s. Five is a congruent number
In mathematics, a congruent number is a positive integer that is the area of a right triangle with three rational number sides. A more general definition includes all positive rational numbers with this property.
The sequence of (integer) congruen ...

.
Five is conjectured to be the only odd untouchable number
An untouchable number is a positive integer
An integer (from the Latin
Latin (, or , ) is a classical language
A classical language is a language
A language is a structured system of communication
Communication (from Lat ...

and if this is the case then five will be the only odd prime number that is not the base of an aliquot tree.
Five is also the only prime that is the sum of two consecutive primes, namely 2 and 3, with these indeed being the ''only'' possible set of two consecutive primes.
The number 5 is the fifth Fibonacci number
In mathematics, the Fibonacci numbers, commonly denoted , form a sequence
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), ...

, being plus . It is the only Fibonacci number that is equal to its position. Five is also a Pell number
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities and ...

and a Markov number
A Markov number or Markoff number is a positive integer ''x'', ''y'' or ''z'' that is part of a solution to the Markov Diophantine equation
:x^2 + y^2 + z^2 = 3xyz,\,
studied by .
The first few Markov numbers are
:1 (number), 1, 2 (number), 2, ...

, appearing in solutions to the Markov Diophantine equation: (1, 2, 5), (1, 5, 13), (2, 5, 29), (5, 13, 194), (5, 29, 433), ... ( lists Markov numbers that appear in solutions where one of the other two terms is 5). Whereas 5 is unique in the Fibonacci sequence, in the Perrin sequence 5 is both the fifth and sixth Perrin number In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities and the ...

s.
5 is the length of the hypotenuse
In geometry
Geometry (from the grc, Î³ÎµÏ‰Î¼ÎµÏ„ÏÎ¯Î±; ' "earth", ' "measurement") is, with , one of the oldest branches of . It is concerned with properties of space that are related with distance, shape, size, and relative position of ...

of the smallest integer-sided right triangle.
In bases 10 and 20, 5 is a 1-automorphic number
In mathematics, an automorphic number (sometimes referred to as a circular number) is a natural number in a given number base b whose square number, square "ends" in the same digits as the number itself.
Definition and properties
Given a number b ...

.
Five is the second Sierpinski number of the first kind, and can be written as S2 = (2polynomial
In mathematics
Mathematics (from Ancient Greek, Greek: ) includes the study of such topics as quantity (number theory), mathematical structure, structure (algebra), space (geometry), and calculus, change (mathematical analysis, analysis). I ...

equations of degree and below can be solved with radicals, equations of degree 5 and higher cannot generally be so solved. This is the Abelâ€“Ruffini theorem
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities and ...

. This is related to the fact that the symmetric group
In abstract algebra
In algebra, which is a broad division of mathematics, abstract algebra (occasionally called modern algebra) is the study of algebraic structures. Algebraic structures include group (mathematics), groups, ring (mathemati ...

''S''solvable group
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities and t ...

for and not solvable for .
While all graphs
Graph may refer to:
Mathematics
*Graph (discrete mathematics)
In mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes an ...

with 4 or fewer vertices are planar
Planar may refer to:
Science and technology
* Planar (computer graphics)
In computer graphics, planar is the method of arranging pixel data into several '' bitplanes'' of RAM. Each bit in a bitplane is related to one pixel on the screen. Unlike ...

, there exists a graph with 5 vertices which is not planar: ''K''complete graph
In the mathematical
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities ...

with 5 vertices.
There are five Platonic solids.
A polygon with five sides is a pentagon
In geometry, a pentagon (from the Greek language, Greek Ï€ÎÎ½Ï„Îµ ''pente'' meaning ''five'' and Î³Ï‰Î½Î¯Î± ''gonia'' meaning ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple polygon, simple pentagon is ...

. Figurate numbers representing pentagons (including five) are called pentagonal numbers. Five is also a square pyramidal number.
Five is the only prime number to end in the digit 5 because all other numbers written with a 5 in the ones place under the decimal system are multiples of five. As a consequence of this, 5 is in base 10 a 1-automorphic number
In mathematics, an automorphic number (sometimes referred to as a circular number) is a natural number in a given number base b whose square number, square "ends" in the same digits as the number itself.
Definition and properties
Given a number b ...

.
fraction (mathematics)#Vulgar, proper, and improper fractions, Vulgar fractions with 5 or in the fraction (mathematics), denominator do not yield infinite decimal expansions, unlike expansions with all other prime denominators, because they are prime factors of 10 (number), ten, the base. When written in the decimal system, all multiples of 5 will end in either 5 or .
There are five Simple Lie group#Exceptional cases, exceptional Lie groups.
List of basic calculations

In the powers of 5, every power ends with the number five and from 5Evolution of the Arabic digit

The evolution of the modern Western digit for the numeral 5 cannot be traced back to the Brahmi numerals, Indian system, as for the digits 1 to 4. The Kushan Empire, Kushana and Gupta Empire, Gupta empires in what is now India had among themselves several different forms that bear no resemblance to the modern digit. The Devanagari, Nagari and Punjabi language, Punjabi took these digits and all came up with forms that were similar to a lowercase "h" rotated 180Â°. The Ghubar Arabs transformed the digit in several different ways, producing from that were more similar to the digits 4 or 3 than to 5. It was from those digits that Europeans finally came up with the modern 5. While the shape of the character for the digit 5 has an Ascender (typography), ascender in most modern typefaces, in typefaces with text figures the glyph usually has a descender, as, for example, in .Science

*The atomic number of boron. *The number of appendages on most sea star, starfish, which exhibit symmetry (biology)#Pentamerism, pentamerism. *The most destructive known tropical cyclone, hurricanes rate as Saffirâ€“Simpson hurricane wind scale#Category 5, Category 5 on the Saffirâ€“Simpson hurricane wind scale. *The most destructive known tornadoes rate an F-5 on the Fujita scale or EF-5 on the Enhanced Fujita scale.Astronomy

*Messier object Messier 5, M5, a magnitude 7.0 globular cluster in the constellation Serpens. *The New General Catalogue]object

NGC 5, a apparent magnitude, magnitude 13 spiral galaxy in the constellation Andromeda (constellation), Andromeda. *The Roman numeral V stands for dwarfs (main sequence stars) in the stellar classification, Yerkes spectral classification scheme. *The Roman numeral V (usually) stands for the fifth-discovered satellite of a planet or minor planet (e.g. Amalthea (moon), Jupiter V). *There are five Lagrangian points in a two-body system.

Biology

*There are generally considered to be five senses. *Almost all amphibians, reptiles, and mammals which have fingers or toes have five of them on each extremity.Computing

*5 is the ASCII code of the Enquiry character, which is abbreviated to ENQ.Religion and culture

Hinduism

*The god Shiva has five faces and his Mantra is also called Panchakshari (Five Worded) mantra. *The goddess Saraswati, goddess of knowledge and intellectual is associated with Panchami or number 5. *There are five elements in this universe: Dharti, Agni, Jal, Vayu evam Akash (Earth, Fire, Water, Air and Space respectively). *The most sacred tree in Hinduism has 5 leaves in every leaf stunt. *Most of the flowers have 5 petals in them. *The epic Mahabharata revolves around the battle between Duryodhana and his 99 other brothers and the 5 pandava princes -Yudhisthira, Dharma, Arjuna, Bhima, Nakula and Sahadeva.Christianity

*There are traditionally Five Wounds of Jesus Christ in Christianity: the Flagellation of Christ, Scourging at the Pillar, Crown of Thorns, the Crowning with Thorns, the wounds in Christ's hands, the wounds in Christ's feet, and the Holy Lance, Side Wound of Christ.Discordianism

*In Discordianism, 5 is seen as a very important number. This is demonstrated in the Discordianism#Law of Fives, Law of Fives, as well as in the Discordianism#Pentabarf, Pentabarf, which contains five rules. *Each page of the Principia Discordiaâ€”the primary religious document in Discordianismâ€”is labeled with five digits.Islam

*The Five Pillars of Islam *Muslims pray to Allah five times a day *According to Shia Muslims, the Panjetan-e-Pak, Panjetan or the Five Holy Purified Ones are the members of Muhammad's family: Muhammad, Ali, Fatimah, Hasan ibn Ali, Hasan, and Husayn ibn Ali, Husayn and is often symbolically represented by an image of the Khamsa.Judaism

*The Torah contains five booksâ€”Book of Genesis, Genesis, Book of Exodus, Exodus, Book of Leviticus, Leviticus, Book of Numbers, Numbers, and Book of Deuteronomy, Deuteronomyâ€”which are collectively called the Five Books of Moses, the Pentateuch (Greek language, Greek for "five containers", referring to the scroll cases in which the books were kept), or Chumash (Judaism), Humash (, Hebrew language, Hebrew for "fifth"). *The book of Psalms is arranged into five books, paralleling the Five Books of Moses. *The Hamsa, Khamsa, an ancient symbol shaped like a hand with four fingers and one thumb, is used as a protective amulet by Jews; that same symbol is also very popular in Arabic culture, known to protect from envy and the evil eye.Sikhism

*The five sacred Sikh symbols prescribed by Guru Gobind Singh are commonly known as ''panj kakars'' or the "Five Ks" because they start with letter K representing ''kakka'' () in the Punjabi language's Gurmukhi script. They are: ''kesh'' (unshorn hair), ''kangha'' (the comb), ''kara'' (the steel bracelet), ''kachhehra'' (the soldiers shorts), and ''kirpan'' (the sword) (in Gurmukhi: ). Also, there are five deadly evils: ''kam'' (lust), ''krodh'' (anger), ''moh'' (attachment), ''lobh'' (greed), and ''ankhar'' (ego).Tao, Daoism

*Wuxing (Chinese philosophy), 5 Elements *Three Sovereigns and Five Emperors, 5 EmperorsOther religions and cultures

*According to ancient Greek philosophers such as Aristotle, the universe is made up of five classical elements: water (classical element), water, earth (classical element), earth, air (classical element), air, fire (classical element), fire, and aether (classical element), ether. This concept was later adopted by Medieval alchemists and more recently by practitioners of Neo-Pagan religions such as Wicca. *The pentagram, or five-pointed star, bears religious significance in various faiths including BahÃ¡Ê¼Ã Faith, BahÃ¡Ê¼Ã, Christianity, Freemasonry, Satanism, Taoism, Thelema, and Wicca. *In Cantonese, "five" sounds like the word "not" (character: ). When five appears in front of a lucky number, e.g. "58", the result is considered unlucky. *In East Asian tradition, there are five elements: (water (Wu Xing), water, fire (Wu Xing), fire, earth (Wu Xing), earth, tree (Wu Xing), wood, and metal (Wu Xing), metal). The Japanese language, Japanese names for the week-day names, days of the week, Tuesday through Saturday, come from these elements via the identification of the elements with the Classical planet, five planets visible with the naked eye. Also, the traditional Japanese calendar has a five-day weekly cycle that can be still observed in printed mixed calendars combining Western, Chinese-Buddhist, and Japanese names for each weekday. *In numerology, 5 or a series of 555 (number), 555, is often associated with change, love and abundance. *Members of The Nation of Gods and Earths, a primarily African American religious organization, call themselves the "Five-Percenters" because they believe that only 5% of mankind is truly enlightened.Art, entertainment, and media

Fictional entities

*James the Red Engine, a fictional character numbered 5. *Johnny 5 is the lead character in the film ''Short Circuit'' (1986) *Number Five is a character in Lorien Legacies *Sankara Stones, five magical rocks in ''Indiana Jones and the Temple of Doom'' that are sought by the Thuggees for evil purposes *The Mach Five ( Mahha-gÅ?), the racing car Speed Racer (Go Mifune in the Japanese version) drives in the anime series of the same name (known as "Mach Go! Go! Go!" in Japan) *In the works of J. R. R. Tolkien, five wizards (Saruman, Gandalf, Radagast, Blue Wizards, Alatar and Pallando) are sent to Middle-earth to aid against the threat of the Dark Lord Sauron *In the ''A Song of Ice and Fire'' series, the War of the Five Kings is fought between different claimants to the Iron Throne of Westeros, as well as to the thrones of the individual regions of Westeros (Joffrey Baratheon, Stannis Baratheon, Renly Baratheon, Robb Stark and Balon Greyjoy) *In ''The Wheel of Time'' series, the "Emond's Field Five" are a group of five of the series' main characters who all come from the village of Emond's Field (Rand al'Thor, Matrim Cauthon, Perrin Aybara, Egwene al'Vere and Nynaeve al'Meara) *Myst (series), ''Myst'' uses the number 5 as a unique base counting system. In ''The Myst Reader'' series, it is further explained that the number 5 is considered a holy number in the fictional D'ni society. *Number Five is also a character in The Umbrella Academy comic book and TV series adaptationFilms

*Towards the end of the film ''Monty Python and the Holy Grail'' (1975), the character of King Arthur repeatedly confuses the number five with the number 3, three. *''Five Go Mad in Dorset'' (1982) was the first of the long-running series of ''The Comic Strip, The Comic Strip Presents...'' television comedy films *''The Fifth Element'' (1997), a science fiction film * ''Fast Five'' (2011), the fifth installment of the The Fast and the Furious (series), ''Fast and Furious'' film series. *''V for Vendetta (film), V for Vendetta'' (2005), produced by Warner Bros., directed by James McTeigue, and adapted from Alan Moore's graphic novel ''V for Vendetta'' prominently features number 5 and Roman Numeral V; the story is based on the historical event in which a group of men attempted to destroy Parliament on November 5, 1605Music

Groups

*Five (band), a UK Boy band *The Five (composers), 19th-century Russian composers *5 Seconds of Summer, pop band that originated in Sydney, Australia *Five Americans, American rock band active 1965â€“1969 *Five Finger Death Punch, American heavy metal band from Las Vegas, Nevada. Active 2005â€“present *Five Man Electrical Band, Canadian rock group billed (and active) as the Five Man Electrical Band, 1969â€“1975 *Maroon 5, American pop rock band that originated in Los Angeles, California *MC5, American punk rock band *Pentatonix, a Grammy-winning a cappella group originated in Arlington, Texas *The 5th Dimension, American pop vocal group, active 1977â€“present *The Dave Clark Five, a.k.a. DC5, an English pop rock group comprising Dave Clark (musician), Dave Clark, Lenny Davidson, Rick Huxley, Denis Payton, and Mike Smith (Dave Clark Five), Mike Smith; active 1958â€“1970 *The Jackson 5, American pop rock group featuring various members of the Jackson family; they were billed (and active) as The Jackson 5, 1966â€“1975 *We Five: American folk rock group active 1965â€“1967 and 1968â€“1977 *Grandmaster Flash and the Furious Five: American rap group, 1970â€“80's *Fifth Harmony, an American girl group. *Ben Folds Five, an American alternative rock trio, 1993â€“2000, 2008 and 2011â€“2013 *R5 (band), an American pop and alternative rock group, 2009â€“2018Other uses

*A perfect fifth is the most consonant harmony, and is the basis for most western tuning systems. *Modern musical notation uses a staff (music), musical staff made of five horizontal lines. *In harmonics â€“ the fifth harmonic series (music), partial (or 4th overtone) of a fundamental frequency, fundamental has a frequency ratio of 5:1 to the frequency of that fundamental. This ratio corresponds to the interval of 2 octaves plus a pure major third. Thus, the interval of 5:4 is the interval of the pure third. A major and minor, major Triad (music), triad chord (music), chord when played in just intonation (most often the case in a cappella vocal ensemble singing), will contain such a pure major third. *The number of completed, numbered piano concertos of Ludwig van Beethoven, Sergei Prokofiev, and Camille Saint-SaÃ«ns. *Using the Latin root, five musicians are called a quintet. *A scale with five notes per octave is called a pentatonic scale. *Five is the lowest possible number that can be the top number of a time signature with an asymmetric meter (music), meter.Television

;Stations *Channel 5 (UK), a television channel that broadcasts in the United Kingdom *5 (TV channel) (''formerly known as ABC 5 and TV5'') (DWET-TV channel 5 In Metro Manila) a television network in the Philippines. ; ;Series *''Babylon 5'', a science fiction television series *The number 5 features in the television series Battlestar Galactica (2004 TV series), ''Battlestar Galactica'' in regards to the Cylon (reimagining)#The "Final Five" Humanoid Cylons, Final Five Cylon (reimagining), cylons and the List of Battlestar Galactica (reimagining) locations#T, Temple of Five *Hi-5 (Australian TV series), ''Hi-5'' (Australian TV series), a television series from Australia *Hi-5 (UK TV series), ''Hi-5'' (UK TV series), a television show from the United Kingdom *Hi-5 Philippines, ''Hi-5'' Philippines a television show from the Philippines *''Odyssey 5'', a 2002 science fiction television series *''Tillbaka till Vintergatan'', a Swedish children's television series featuring a character named "Femman" (meaning five), only can utter the word 'five'. *''The Five (talk show), The Five'' The Five (talk show), (talk show): Fox News Channel roundtable current events television show, premiered 2011. So named for its panel of five commentators. *''Yes! PreCure 5'' is a 2007 anime series which follows the adventures of Nozomi and her friends. It is also followed by the 2008 sequel ''Yes! Pretty Cure 5 GoGo!'' *Hawaii_Five-0_(2010_TV_series), ''Hawaii Five-0'', CBS American TV series.Literature

*The Famous Five (novel series), ''The Famous Five'' is a series of children's books by British writer Enid Blyton *''The Power of Five'' is a series of children's books by British writer and screenwriter Anthony Horowitz *''The Fall of Five'' is a book written under the collective pseudonym Pittacus Lore in the series ''Lorien Legacies'' *''The Book of Five Rings'' is a text on kenjutsu and the martial arts in general, written by the swordsman Miyamoto Musashi circa 1645 *''Slaughterhouse-Five'' is a book by Kurt Vonnegut about World War IISports

*The Olympic Games have five interlocked rings as their symbol, representing the number of inhabited continents represented by the Olympians (Europe, Asia, Africa, Australia and Oceania, and the Americas). * In AFL Women's, the top level of Women's Australian rules football, women's Australian rules football, each team is allowed 5 "Interchange (Australian rules football), interchanges" (substitute players), who can be freely substituted at any time. *In Baseball scorekeeping#Defensive positions, baseball scorekeeping, the number 5 represents the third baseman's position. *In basketball: **The number 5 is used to represent the position of center (basketball), center. **Each team has five players on the court at a given time. Thus, the phrase "five on five" is commonly used to describe standard competitive basketball. **The Five-second rule (basketball), "5-second rule" refers to several related rules designed to promote continuous play. In all cases, violation of the rule results in a turnover. **Under the FIBA (used for all international play, and most non-US leagues) and College basketball, NCAA women's rule sets, a team begins shooting Bonus (basketball), bonus free throws once its opponent has committed five Personal foul (basketball), personal fouls in a quarter. **Under the FIBA rules, A player fouls out and must leave the game after committing five fouls *Five-a-side football is a variation of association football in which each team fields five players. *In ice hockey: ** A major penalty lasts five minutes. ** There are five different ways that a player can score a goal (teams at even strength, team on the power play, team playing shorthanded, penalty shot, and empty net). ** The area between the goaltender's legs is known as the five-hole. *In most rugby league competitions, the starting Rugby league positions#Wing, left wing wears this number. An exception is the Super League, which uses static squad numbering. *In rugby union: ** A Try (rugby), try is worth 5 points. ** One of the two starting Lock (rugby union), lock forwards wears number 5, and usually jumps at number 4 in the line-out (rugby union), line-out. ** In the National Rugby League (France), French variation of the Rugby union bonus points system, bonus points system, a bonus point in the league standings is awarded to a team that loses by 5 or fewer points.Technology

*5 is the most common number of gears for automobiles with manual transmission. *In radio communication, the term "Five by five" is used to indicate perfect signal strength and clarity. *On almost all devices with a numeric keypad such as telephones, computers, etc., the 5 key has a raised dot or raised bar to make dialing easier. Persons who are blind or have low vision find it useful to be able to feel the keys of a telephone. All other numbers can be found with their relative position around the 5 button (on computer keyboards, the 5 key of the numeric keypad, numpad has the raised dot or bar, but the 5 key that shifts with % does not). *On most telephones, the 5 key is associated with the letters J, K, and L, but on some of the BlackBerry phones, it is the key for G and H. *The Pentium, coined by Intel Corporation, is a fifth-generation x86 architecture microprocessor. *The resin identification code used in recycling to identify polypropylene.Miscellaneous fields

Five can refer to: *"Give me five" is a common phrase used preceding a high five. *An informal term for the British Security Service, MI5. *Five babies born at one time are multiple birth, quintuplets. The most famous set of quintuplets were the Dionne quintuplets born in the 1930s. *In the United States legal system, the Fifth Amendment to the United States Constitution can be referred to in court as "pleading the fifth", absolving the defendant from self-incrimination. *Pentameter is verse with five repeating feet per line; iambic pentameter was the most popular form in William Shakespeare, Shakespeare. *Aether (classical element), Quintessence, meaning "fifth element", refers to the elusive fifth element that completes the basic four elements (water, fire, air, and earth) *The designation of an Interstate Highway System, Interstate Highway (Interstate 5) that runs from San Diego, California to Blaine, Washington. In addition, all major north-south Interstate Highways in the United States end in 5. *The five basic tastes are sweetness, sweet, taste#Saltiness, salty, taste#Sourness, sour, taste#Bitterness, bitter, and umami. *In the computer game ''Riven'', 5 is considered a holy number, and is a recurring theme throughout the game, appearing in hundreds of places, from the number of islands in the game to the number of bolts on pieces of machinery. *''The Garden of Cyrus'' (1658) by Sir Thomas Browne is a Pythagorean discourse based upon the number 5. *The holy number of Discordianism, as dictated by the Discordianism#Law of Fives, Law of Fives. *The number of Justices on the Supreme Court of the United States necessary to render a majority decision. *The number of dots in a quincunx. *The number of permanent members with veto power on the United Nations Security Council. *The number of sides and the number of angles in apentagon
In geometry, a pentagon (from the Greek language, Greek Ï€ÎÎ½Ï„Îµ ''pente'' meaning ''five'' and Î³Ï‰Î½Î¯Î± ''gonia'' meaning ''angle'') is any five-sided polygon or 5-gon. The sum of the internal angles in a simple polygon, simple pentagon is ...

.
*The number of points in a pentagram.
*The number of Korotkoff sounds when measuring blood pressure
*The drink Five Alive is named for its five ingredients. The drink Punch (drink), punch derives its name after the Sanskrit à¤ªà¤žà¥à¤š (paÃ±c) for having five ingredients.
*The Keating Five were five United States Senate, United States Senators accused of corruption in 1989.
*The Inferior Five: Merryman, Awkwardman, The Blimp, White Feather, and Dumb Bunny. DC Comics parody superhero team.
*Chanel No. 5, No. 5 is the name of the iconic fragrance created by Coco Chanel.
*The Committee of Five was delegated to draft the United States United States Declaration of Independence, Declaration of Independence.
*The five-second rule is a commonly used rule of thumb for dropped food.
*555 95472, usually referred to simply as 5, is a minor male character in the comic strip ''Peanuts''.
See also

*Five Families *Five Nations (disambiguation) *555 (number) *List of highways numbered 5References

*Wells, D. ''The Penguin Dictionary of Curious and Interesting Numbers'' London: Penguin Group. (1987): 58â€“67External links

* *The Number 5

The Positive Integer 5

{{DEFAULTSORT:5 (Number) Integers 5 (number)