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  2. Integer complexity - Wikipedia

    en.wikipedia.org/wiki/Integer_Complexity

    The smallest example of a number whose optimal expression is not of this form is 353942783. It is a prime number , and therefore also disproves a conjecture of Richard K. Guy that the complexity of every prime number p is one plus the complexity of p − 1 . [ 5 ]

  3. Rayo's number - Wikipedia

    en.wikipedia.org/wiki/Rayo's_number

    The Rayo function of a natural number , notated as (), is the smallest number bigger than every finite number with the following property: there is a formula () in the language of first-order set-theory (as presented in the definition of ) with less than symbols and as its only free variable such that: (a) there is a variable assignment assigning to such that ([()],), and (b) for any variable ...

  4. Sieve of Eratosthenes - Wikipedia

    en.wikipedia.org/wiki/Sieve_of_Eratosthenes

    The multiples of a given prime are generated as a sequence of numbers starting from that prime, with constant difference between them that is equal to that prime. [1] This is the sieve's key distinction from using trial division to sequentially test each candidate number for divisibility by each prime. [ 2 ]

  5. Amateur mathematician discovers largest known prime number ...

    www.aol.com/amateur-mathematician-discovers...

    New prime is 16 million digits larger than previous one. New prime is 16 million digits larger than previous one. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...

  6. Megaprime - Wikipedia

    en.wikipedia.org/wiki/Megaprime

    A megaprime is a prime number with at least one million decimal digits. [1]Other terms for large primes include "titanic prime", coined by Samuel Yates in the 1980s for a prime with at least 1000 digits [2] (of which the smallest is 10 999 +7), [3] and "gigantic prime" for a prime with at least 10,000 digits [4] (of which the smallest is 10 9999 +33603).

  7. Largest known prime number - Wikipedia

    en.wikipedia.org/wiki/Largest_known_prime_number

    [1] A plot of the number of digits in the largest known prime by year, since the electronic computer. The vertical scale is logarithmic. A prime number is a natural number greater than 1 with no divisors other than 1 and itself. According to Euclid's theorem there are infinitely many prime numbers, so there is no largest prime.

  8. Maximum subarray problem - Wikipedia

    en.wikipedia.org/wiki/Maximum_subarray_problem

    For example, for the array of values [−2, 1, −3, 4, −1, 2, 1, −5, 4], the contiguous subarray with the largest sum is [4, −1, 2, 1], with sum 6. Some properties of this problem are: If the array contains all non-negative numbers, then the problem is trivial; a maximum subarray is the entire array.

  9. Pandigital number - Wikipedia

    en.wikipedia.org/wiki/Pandigital_number

    In mathematics, a pandigital number is an integer that in a given base has among its significant digits each digit used in the base at least once. For example, 1234567890 (one billion two hundred thirty-four million five hundred sixty-seven thousand eight hundred ninety) is a pandigital number in base 10.