Automatic integer factoring for 310-digit decimal numbers

Question

Is here some software, which is capable of factoring a 310-digit decimal integer number into primes? There was msieve, which I successfully used for 120-digit factoring, but 310 digit is greater than max allowed number of 308-digit for msieve.

PS: the number to factor have 2 prime factors, and p-1,p+1 and other easy and fast factoring methods are likely to fail.

UPDATE: Seems only GGNFS will work and there are some python scripts to automate factoring.