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  2. List of prime numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_prime_numbers

    A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem , there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes .

  3. List of numbers - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/List_of_numbers

    A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

  4. Table of divisors - Wikipedia

    en.wikipedia.org/wiki/Table_of_divisors

    Table of divisors. Plot of the number of divisors of integers from 1 to 1000. Highly composite numbers are in bold and superior highly composite numbers are starred. In the SVG file, hover over a bar to see its statistics. The tables below list all of the divisors of the numbers 1 to 1000. A divisor of an integer n is an integer m, for which n ...

  5. Googol - Wikipedia

    en.wikipedia.org/wiki/Googol

    The decay time for a supermassive black hole of roughly 1 galaxy-mass (10 11 solar masses) due to Hawking radiation is on the order of 10 100 years. [7] Therefore, the heat death of an expanding universe is lower-bounded to occur at least one googol years in the future. A googol is considerably smaller than a centillion. [8]

  6. List of Mersenne primes and perfect numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_Mersenne_primes...

    Thus, all Mersenne numbers M4k+1 are congruent to 11 modulo 20 and end in 11, 31, 51, 71 or 91, while Mersenne numbers M4k−1 ≡ 7 (mod 20) and end in 07, 27, 47, 67, or 87. For the perfect numbers, define Pn = 2n−1Mn be the value which is perfect if Mn is prime. When n = 4k+1 and k > 0, 24k ≡ 16 (mod 20), so Pn ≡ 16×11 ≡ 16 (mod 20 ...

  7. Number - Wikipedia

    en.wikipedia.org/wiki/Number

    The natural numbers, starting with 1. The most familiar numbers are the natural numbers (sometimes called whole numbers or counting numbers): 1, 2, 3, and so on. Traditionally, the sequence of natural numbers started with 1 (0 was not even considered a number for the Ancient Greeks.)

  8. 100 - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/100

    Year 100 was a leap year starting on Wednesday of the Julian calendar. The denomination 100 for this year has been used since the early medieval period.

  9. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    10,000: a myriad (a hundred hundred), commonly used in the sense of an indefinite very high number. 100,000: a lakh (a hundred thousand), in Indian English. 10,000,000: a crore (a hundred lakh), in Indian English and written as 100,00,000. 10 100: googol (1 followed by 100 zeros), used in mathematics.

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