Need a program to factor large (50 digit) numbers

[Jeff7]

Originally posted by: Kyteland
That number doesn't have the first 15 million primes as a factor.

Unless you typed it in wrong.....

See my link.
The number was typed correctly.

The number is the RSA-704 challenge number. The unclaimed prize for factoring it is $30,000. Factoring the previous number took "30 2.2GHz-Opteron-CPU years according to the submitters, over five months of calendar time."

 

[pinhodecarlos]

Hi all,

RSA704 is factored. A report describing the details of the factorization effort can be found on http://maths.anu.edu.au/~bai

Best regards,
Shi

Source: http://www.mersenneforum.org/showthread.php?t=16949