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| x name | x image | x Approximate value | x article |
| x Pi |
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3.14159265358979323846264338327950288419716939937510 |
The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter. The constant, sometimes written pi, is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century....
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| x e | 2.71828182845904523536 |
The number e is an important mathematical constant, approximately equal to 2.71828, that is the base of the natural logarithm. It is the limit of (1 + 1/n) as n becomes large, an expression that arises in the study of compound interest, and can also...
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| x 1 | |||
| x 3,600,000 | |||
| x 0 |
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0 |
0 (zero; BrE: /ˈzɪərəʊ/, ZIRR-oh or AmE: /ˈziːroʊ/, ZEER-oh) is both a number and the numerical digit used to represent that number in numerals. It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and...
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| x −0 | -0 |
Signed zero is zero with an associated sign. In ordinary arithmetic, −0 = +0 = 0. However, in computing, some number representations allow for the existence of two zeros, often denoted by −0 (negative zero) and +0 (positive zero). This occurs in the...
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| x 0.999... |
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0.999... |
In mathematics, the repeating decimal 0.999... (sometimes written with more or fewer 9s before the final ellipsis, or as 0.9, , 0.(9)) denotes a real number that can be shown to be the number one. In other words, the symbols 0.999... and 1 represent...
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| x 42 |
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42 |
42 (forty-two) is the natural number immediately following 41 and directly preceding 43. The number has received considerable attention in popular culture as a result of its central appearance in The Hitchhiker's Guide to the Galaxy as the "Answer...
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| x 78 | 78 |
78 (seventy-eight) is the natural number following 77 and followed by 79.
78 is a triangular number, and its factorization makes it a sphenic number. As a multiple of a perfect number, 78 is itself a semiperfect number.
77 and 78 form a Ruth-Aaron...
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| x 311 | 311 |
311 is the natural number after 310 and before 312.
311 is a twin prime with 313; an Eisenstein prime with no imaginary part and real part of the form ; a Gaussian prime with no imaginary part and real part of the form ; and a permutable prime with...
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| x 201 |
201 is the natural number following 200 and preceding 202. It may be written as "two hundred one" or "two hundred and one".
As the two factors of 201 are both Gaussian primes, 201 is a Blum integer.
201 is a Harshad number in base 10.
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| x Number of people on earth | 6.500000000 | ||
| x 2147483647 |
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2147483647 |
The number 2,147,483,647 (two billion one hundred forty-seven million four hundred eighty-three thousand six hundred forty-seven) is the eighth Mersenne prime, equal to 2 − 1. It is one of only four known double Mersenne primes.
The primality of...
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| x 111 |
111 (One hundred [and] eleven) is the natural number following 110 and preceding 112.
111 is a perfect totient number.
111 is R3 or the second repunit, a number like 11, 111, or 1111 that consists of repeated units, or 1's. It equals 3 × 37,...
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| x 2305843009213693951 | 2305843009213693951 |
The number 2305843009213693951 is the ninth Mersenne prime and is equal to 2 − 1. It was determined to be prime in 1883 by Ivan Mikheevich Pervushin and for this reason it is sometimes called Pervushin's number. At the time of Pervushin's proof it...
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| x Number of the Beast |
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666 |
The Number of the Beast (Greek: Ἀριθμὸς τοῦ θηρίου, Arithmos tou Thēriou) is a term in the Book of Revelation, of the New Testament, that is associated with the Beast of Revelation in chapter 13. In most manuscripts of the New Testament and in...
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