The word numbers can refer to Numbers in math Telephone numbers The "Book of Numbers", part of the Hebrew Bible. A Numbers game, a gambling scheme common in poor urban neighborhoods. Numb3rs, an American TV show on CBS The Numbers in Lost: 4, 8, 15, 16, 23 and 42 "Numbers," a focal episode of Season 1 in the series Other related archivesBook of N

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Numbers should be distinguished from numerals, the symbols used to represent numbers. The number five can be represented by both the base ten numeral 5 and by the Roman numeral V. Notations used to represent numbers are discussed in the article numeral systems. Numbers are often used to give objects unique names. Examples are telephone numbers, social security numbers, and ISBNs. ...

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A bicomplex number is a number written in the form, a + bi1 + ci2 + dj, where i1, i2 and j are imaginary units. Based on the rules for multiplying the imaginary units, then if A = a + bi1 and B = c + di1, then the bicomplex number may be written A + Bi2. Thus, bicomplex numbers are similar to complex numbers, but the two parts are complex rather than real. Bicomplex numbers reduce to compl ...

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In mathematics an automorphic number is a number whose square "ends" in the number itself. For example, 52 = 25, 762 = 5776, and 8906252 = 793212890625. The automorphic numbers begin 1, 5, 6, 25, 76, 376, 625, 9376, ... (sequence A003226 in OEIS) Given a k-digit automorphic number n > 1, an at-most 2k-digit automorphic number

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In mathematics, a Woodall number is a natural number of the form n · 2n − 1 (written Wn). Woodall numbers were first studied by A. J. C. Cunningham and H. J. Woodall in 1917, inspired by James Cullen's earlier study of the similarly-defined Cullen numbers. The first few Woodall numbers are 1, 7, 23, 63, 159, 383, 895, ... (sequence A003261 in OEIS). Wo ...

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Bekker numbers are the page numbers used in the Prussian Academy of Sciences edition of the complete works of Aristotle. They take their name from the editor of that edition, the classical philologist August Immanuel Bekker (1785-1871). Bekker numbers take the format of four numbers, a letter for column 'a' or 'b', then the line number. For example, the beginning of Aristotle's Nicomachean Ethics is 1094a1, which corresponds to page 1094 of Bekker's edition of the G ...

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A composite number is a positive integer which has a positive divisor other than one or itself. By definition, every integer greater than one is either a prime number or a composite number. The numbers zero and one are considered to be neither prime nor composite. The integer 14 is a composite number because it can be factored as 2 × 7. Composite number - Properties. All even numbers greater than 2 are composite numbers. The smallest composite number is 4. Every co ...

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In mathematics, the Hebrew letter (aleph) with various subscripts represents various infinite cardinal numbers (see aleph number). The second Hebrew letter (beth) is also used. To define the beth numbers, start by letting be the cardinality of countably infinite sets; for concreteness, take the set of natural numbers to be the typical case. Denote by P(A) the power set of A, i.e., the set of all subsets of A. Then define = the cardinality of the power set of A if is the cardina ...

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In linguistics, collective number is a number referring to a set of things. Languages that have this feature can use it to get a phrase like 'flock of sheep' by using 'sheep' in collective number. Some languages have collectives but no grammatical plural. For example, Chinese, Japanese (except in a small number of cases), and Korean do not have plurals. However, groups of people can be referred to, either by context or pe ...

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One hundred (and) fifty-three is the natural number following one hundred (and) fifty-two and preceding one hundred (and) fifty-four. As a triangular number, it is the sum of the first 17 integers, and also the sum of the first five factorials. (It is also a hexagonal number). It is a Harshad number. Since 153 = 1^3 + 5^3 + 3^3, it is a 3-narcissistic number, and it is a Friedman number since 153 = 3 * 51. Evagrius Ponticus considered 153 to represent a harmonization of contrasts, since 153 = 100 + 28 + 25, with 100 re ...

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Six hundred is the natural number following five hundred and ninety-nine and preceding six hundred and one. It is a pronic number and a Harshad number. << 0 100 200 300 400 500 600 700 800 900 >> 600 and below is considered a poor credit score. For the year AD, see 600. 601 prime number, centered pentagonal number 602 = 2 × 7 × 43, nontotient 603 = 32 × 67, Harshad number 604 = 22 × 151, nontotie ...

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A Zenith number was a special type of telephone number in the United States which a subscriber could obtain, which was introduced prior to the development of toll-free service, which allowed a calling party to call the number's owner at no charge by dialing the operator and requesting the specified Zenith number. In some places the name Enterprise or the letters WX were used. Some organizations continue to keep their Zenith numbers (The California Highway Patrol continues to use the same single number it has for decades, Zenith 1-2000), but with the low cost of incoming W ...

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Nine hundred is the natural number following eight hundred ninety-nine and preceding nine hundred one. It is the square of 30 and a Harshad number. << 0 100 200 300 400 500 600 700 800 900 >> Nine hundred is also: The telephone area code for "premium" phone calls in the North American Numbering Plan: see 900 number. In Greek number symbols Sampi ("Great Pi" ostensibly from the visual resemblance to the Greek letter), wh ...

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Cetane number or CN is to diesel fuel what octane rating is to gasoline. It is a measure of the fuel's combustion quality. Cetane is an alkane molecule that ignites very easily under compression, so it was assigned a cetane number of 100. All other hydrocarbons in diesel fuel are indexed to cetane as to how well they ignite under compression. The cetane number therefore measures how quickly the fuel starts to burn (auto-ignites) under diesel engine conditions. Since there are hundreds of components in diesel fuel, with each having a different cetane quality, the overall cetane number of the diesel ...

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142,857 is the best known cyclic number. If you multiply the number by 2, 3, 4, 5, or 6, the answer will be an anagram of itself. 1 × 142,857 = 142,857 2 × 142,857 = 285,714 3 × 142,857 = 428,571 4 × 142,857 = 571,428 5 × 142,857 = 714,285 6 × 142,857 = 857,142 7 × 142,857 = 999,999 If you continue multiplying it by larger numbers, the result will always be some ...

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800 is the natural number following 799 and preceding 801. << 0 100 200 300 400 500 600 700 800 900 >> It is the sum of four consecutive primes (193 + 197 + 199 + 211). It is a Harshad number. Eight hundred is also: The original telephone area code for toll-free phone calls in the North American Numbering Plan and some other countries. The international direct dial code for toll-free international phone calls. In the ISO rating standard (aka ISO 5800), a common film speed for photographic films.< ...

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70 (seventy) is the natural number following 69 and preceding 71. << 70 71 72 73 74 75 76 77 78 79 >> List of numbers -- Integers 0 10 20 30 40 50 60 70 80 90 >> 70 number - In mathematics. 70 is a Pell number and a Harshad number. Its factorization makes it a sphenic number. It is the seventh pentagonal number and the fourth 13-gonal number, as well as a pentatope number. It ...

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In mathematics, an algebraic number relative to a field F is any element x of a given field K containing F such that x is a solution of a polynomial equation of the form: anxn + an−1xn−1 + ··· + a1x + a0 = 0 wh ...

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An untouchable number is an integer that can not be expressed as the sum of the proper divisors of any integer. The first few untouchable numbers are (sequence A005114 in OEIS): 2, 5, 52, 88, 96, 120, 124, 146, 162, 188, 206, 210, 216, 238, 246, 248, 262, 268, 276, 288, 290, 292, 304, 306, 322, 324, 326, 336, 342, 372, 406, 408, 426, 430, 448, 472, 474, 498, 516, 518, 520, 530, 540, 552, 556, 562, 576, 584, 612, 624, 626, 628, 658 5 is believed to be the only odd untouchable number, but this has not been proven. (Thus it ...

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