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The first: 1, 2, 6, 24, 120, 720, 5040, 40320, 362880 ... Finding the prime factors is often harder than computing gcd and lcm using other algorithms which do not ...
The sum of its factors (including one and itself) sum to 360, exactly three times 120. Perfect numbers are order two ( 2-perfect ) by the same definition. 120 is the sum of a twin prime pair (59 + 61) and the sum of four consecutive prime numbers (23 + 29 + 31 + 37), four consecutive powers of two (8 + 16 + 32 + 64), and four consecutive powers ...
All prime numbers from 31 to 6,469,693,189 for free download. Lists of Primes at the Prime Pages. The Nth Prime Page Nth prime through n=10^12, pi(x) through x=3*10^13, Random primes in same range. Interface to a list of the first 98 million primes (primes less than 2,000,000,000) Weisstein, Eric W. "Prime Number Sequences". MathWorld.
The same prime factor may occur more than once; this example has two copies of the prime factor When a prime occurs multiple times, exponentiation can be used to group together multiple copies of the same prime number: for example, in the second way of writing the product above, 5 2 {\displaystyle 5^{2}} denotes the square or second power of 5 ...
120: 90 × 112 96 × 105 Note: ... Roughly speaking, for a number to be highly composite it has to have prime factors as small as possible, but not too many of the same.
The challenge was to find the prime factors of each number. ... RSA-120 1993-06-09 ppmpqs 835 mips years run by Arjen K. Lenstra (45.503%), Bruce Dodson ...
The numbers which remain prime under cyclic shifts of digits. A016114: Home prime: 1, 2, 3, 211, 5, 23, 7, 3331113965338635107, 311, 773, ... For n ≥ 2, a(n) is the prime that is finally reached when you start with n, concatenate its prime factors (A037276) and repeat until a prime is reached; a(n) = −1 if no prime is ever reached. A037274
The table below lists the largest currently known prime numbers and probable primes ... 120 9×2 11500843 + 1 [37] 13 March 2020 3,462,100 121 3×2 11484018 − 1 [47]