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244 (number)
244 (two hundred ndforty-four) is the natural number following 243 and preceding 245. In mathematics 244 is: *the sum of two nonzero fifth powers (). *palindromic in bases 3 (1000013), 11 (20211), 60 (4460), 121 (22121), 243 (11243). *a Harshad number in bases 3, 9, 11, 61, 62, 81, 121, 122, 123 and 184. *the second anti-perfect number, meaning that reversing the digits of the proper divisors of 244 and adding the results gives 244 back again. *part of the sequence 1, 2, 4, 8, 61, 221, 244, ... in which each number is formed by reversing the digits of the double of the previous number. *the number of non-isomorphic set-systems of weight 8 In other fields *The years 244 and 244 BC *Dialing code for Angola. *It is considered a lucky number in several areas of the United Arab Emirates; specifically Dubai Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal number, cardinal numbers'', and numbers used for ordering are called ''Ordinal number, ordinal numbers''. Natural numbers are sometimes used as labels, known as ''nominal numbers'', having none of the properties of numbers in a mathematical sense (e.g. sports Number (sports), jersey numbers). Some definitions, including the standard ISO/IEC 80000, ISO 80000-2, begin the natural numbers with , corresponding to the non-negative integers , whereas others start with , corresponding to the positive integers Texts that exclude zero from the natural numbers sometimes refer to the natural numbers together with zero as the whole numbers, while in other writings, that term is used instead for the integers (including negative integers). The natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
243 (number)
243 (two hundred ndforty-three) is the natural number following 242 and preceding 244. In mathematics 243 is: *the only 3-digit number that is a fifth power (35). *a perfect totient number. *the sum of five consecutive prime numbers (41 + 43 + 47 + 53 + 59). *an 82- gonal number. In other fields 243 is: * the Calling code for the Democratic Republic of the Congo, the country once known as Zaire. * the year 243 AD or 243 BC. * an Aircraft emergency frequency (243.0 MHz) for military aircraft. * Aloha Airlines Flight 243 which suffered an explosive decompression near Maui, HI on April 28, 1988 * .243 Winchester and .243 WSSM, rifle rounds * The number of Earth Days for the planet Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ... to complete one Venusian day, one revolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
245 (number)
245 (two hundred ndforty-five) is the natural number following 244 and preceding 246. In mathematics 245 is: *a composite number. *a stella octangula number. *palindromic in bases 34 (7734) and 48 (5548) *a Harshad number in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases). *the aliquot sum of any of these numbers: 723, 1195, 2563, 3859, *part of the 97-aliquot tree. 4624, 4893, 2595, 1581, 723, 245, In online public access (library) catalogs In the MARC format for records in online public access (library) catalogs, in which each type of information about a book (or other library material) is identified with a 3-digit number, 245 identifies the title of the item; most library catalog software requires that each record have at least a 245 tag, even if no other information is entered about the item. In other fields * The number of Jewish singers who returned from captivity in Babylon in c. 538 BCE following the rise of Cyrus the Great and the Persian Empire. ''...besides the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fifth Power (algebra)
In arithmetic and algebra, the fifth power or sursolid of a number ''n'' is the result of multiplying five instances of ''n'' together: :. Fifth powers are also formed by multiplying a number by its fourth power, or the square of a number by its cube. The sequence of fifth powers of integers is: :0, 1, 32, 243, 1024, 3125, 7776, 16807, 32768, 59049, 100000, 161051, 248832, 371293, 537824, 759375, 1048576, 1419857, 1889568, 2476099, 3200000, 4084101, 5153632, 6436343, 7962624, 9765625, ... Properties For any integer ''n'', the last decimal digit of ''n''5 is the same as the last (decimal) digit of ''n''. I.E: : n \equiv n^5\pmod By the Abel–Ruffini theorem, there is no general algebraic formula (formula expressed in terms of radical expressions) for the solution of polynomial equations containing a fifth power of the unknown as their highest power. This is the lowest power for which this is true. See quintic equation, sextic equation, and septic equation. Along with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proper Divisor
In mathematics, a divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n. In this case, one also says that n is a multiple of m. An integer n is divisible or evenly divisible by another integer m if m is a divisor of n; this implies dividing n by m leaves no remainder. Definition An integer is divisible by a nonzero integer if there exists an integer such that n=km. This is written as :m\mid n. Other ways of saying the same thing are that divides , is a divisor of , is a factor of , and is a multiple of . If does not divide , then the notation is m\not\mid n. Usually, is required to be nonzero, but is allowed to be zero. With this convention, m \mid 0 for every nonzero integer . Some definitions omit the requirement that m be nonzero. General Divisors can be negative as well as positive, although sometimes the term is restricted to positive divisors. For example, there are six divisors of 4; they are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A283877
A, or a, is the first letter and the first vowel of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, " a", and its variant " an", are indefinite articles. History The earliest certain ancestor of "A" is aleph (also written 'aleph), the first letter of the Phoenician alphabet, which consisted entirely of consonants (for that reason, it is also called an abjad to distinguish it f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
244 BC
__NOTOC__ Year 244 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Atticus and Blaesus (or, less frequently, year 510 ''Ab urbe condita''). The denomination 244 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Greece * Agis IV succeeds his father, Eudamidas II, as King of Sparta. * The war in Asia Minor and the Aegean Sea intensifies as the Achaean League allies itself to Ptolemy III Euergetes of Egypt, while Seleucus II secures two allies in the Black Sea region. Ptolemy III's armies reach as far as Bactria and the borders of India in their attacks on the Seleucid Empire. * By defeating the Egyptian fleet at Andros, Antigonus II is able to maintain his control over the Aegean Sea. Carthage * Hamilcar Barca transfers his army to the slopes of Mount Eryx ( Monte San Giuliano), from which he is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone Numbers In Angola
Telephone numbers in Angola are 9 digits long (except for special 1xx service numbers like Police and Emergency services), and must always be dialed in their entirety. Land-line (fixed-line) numbers start with Numerical digit, digit 2, followed by 1 or 2 Numerical digit, digits area code that corresponds to a geographic area. Description of the Angola telephone network After the area code, there is the telecoms Network operator, operator identifier, which consists of 1 digit, then the subscriber number. Mobile phone, Mobile numbers have no geographic area, and they start with the operators identifier which currently are 91 and 92. (needs updating) Calling formats * xxx xxx xxx Calls within Angola * +244 xxx xxx xxx Calls from outside Angola The NSN length is nine digits. List of area codes in Angola References ITU allocations list Telephone numbers by country, Angola Telecommunications in Angola {{Telephonenumber-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Arab Emirates
The United Arab Emirates (UAE; ar, اَلْإِمَارَات الْعَرَبِيَة الْمُتَحِدَة ), or simply the Emirates ( ar, الِْإمَارَات ), is a country in Western Asia (The Middle East). It is located at the eastern end of the Arabian Peninsula and shares borders with Oman and Saudi Arabia, while having maritime borders in the Persian Gulf with Qatar and Iran. Abu Dhabi is the nation's capital, while Dubai, the most populous city, is an international hub. The United Arab Emirates is an elective monarchy formed from a federation of seven emirates, consisting of Abu Dhabi (the capital), Ajman, Dubai, Fujairah, Ras Al Khaimah, Sharjah and Umm Al Quwain. Each emirate is governed by an emir and together the emirs form the Federal Supreme Council. The members of the Federal Supreme Council elect a president and vice president from among their members. In practice, the emir of Abu Dhabi serves as president while the ruler of Dubai is vice pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dubai
Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab Emirates.The Government and Politics of the Middle East and North Africa. D Long, B Reich. p.157 Established in the 18th century as a small fishing village, the city grew rapidly in the early 21st century with a focus on tourism and luxury, having the second most five-star hotels in the world, and the tallest building in the world, the Burj Khalifa, which is tall. In the eastern Arabian Peninsula on the coast of the Persian Gulf, it is also a major global transport hub for passengers and cargo. Oil revenue helped accelerate the development of the city, which was already a major mercantile hub. A centre for regional and international trade since the early 20th century, Dubai's economy relies on revenues from trade, tourism, aviation, real estate, and financial services. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6mm Remington
The 6mm Remington rifle cartridge, originally introduced in 1955 by Remington Arms Company as the .244 Remington, is based on a necked down .257 Roberts cartridge (itself a necked-down 7×57mm Mauser) using a .24/6mm bullet. Known for a combination of high velocity, long range, flat trajectory, and accuracy, it is suitable as a dual use hunting cartridge for both medium-sized big game and varmints. When used in the less common earlier slow twist barrels, it offers exceptional range for varmint applications. While not as commercially popular today as the .243 Winchester, the 6mm Remington enjoys a slight ballistic advantage and continues to be popular with handloaders and custom rifle builders. Developmental history By the early 1950s, there had been a significant amount of experimentation and ' wildcatting' in developing the .24 caliber bullet as a dual purpose hunting round. Popular cartridges necked down for this purpose included the .257 Roberts (based on the 7x57mm M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
244 H&H Magnum
44 may refer to: * 44 (number) * one of the years 44 BC, AD 44, 1944, 2044 Military * 44M Tas, a Hungarian medium/heavy tank design of World War II * 44M Tas Rohamlöveg, a Hungarian tank destroyer design of World War II, derived from the 44M Tas tank Others *"Forty-Four", a blues standard *Forty-Fours, a group of islands in the Chatham Archipelago *Forty Four, Arkansas, an unincorporated community in Izard County, Arkansas * ''44'' (album), a 2020 quadruple album by Joel Plaskett *"44", a song by Bad Gyal featuring Rema from ''Warm Up'' *"Forty Four", a song by Karma to Burn from '' Appalachian Incantation'' *.44 caliber, a family of firearms and firearm cartridges **.44 Special The .44 Smith & Wesson Special, also commonly known as .44 S&W Special, .44 Special, .44 Spl, .44 Spc, (pronounced "forty-four special"), or 10.9x29mmR is a smokeless powder center fire metallic revolver cartridge developed by Smith & Wesson in 1 ..., a revolver cartridge ** .44 Magnum, a large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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