FACT1 - Integer Factorization (20 digits)
This is a problem to test the robustness of your Integer Factorization algorithm.
Given some integers, you need to factor them into product of prime numbers.
The largest integer given in the input file has 20 digits. FACT2 is a harder version of this problem (the numbers are larger).
You may need to use a general factorization algorithm since no special numbers (e.g. Fermat numbers) are considered when designing the input data.
There are several numbers given, each one in a line.
The input ends with a number 0.
The number of test cases is about 10.
For each number, print in a line the factorization of it. See examples below for the output format.
Input: 3111989 13091989 2432902008176640000 77145199750673 0 Output: 317^1 9817^1 17^2 89^1 509^1 2^18 3^8 5^4 7^2 11^1 13^1 17^1 19^1 328439^1 234884407^1
Well, Brent's method will pass, albeit slowly.
Last edit: 2016-12-04 06:10:29
Pollard Rho Brent Integer Factorization !
There are inputs which are products of two large primes