Fermat number factor search

For the very latest on the search for Fermat number factors, checkout George Woltman's page at:
http://www.mersenne.org/ecmf.htm
Prime95/mprime includes an ECM factoring ability, easily controlled by a single ini file, and is particularly well-suited (and fast!) to looking for factors of larger Fermat (and Mersenneplustwo ;-) numbers. George Woltman even supplies a file of already-known factors of Fermat numbers, that mprime can read, to avoid the time spent re-discovering these (or you can start from scratch without reading-in that file, as a double-check that your set-up is finding factors successfully - this won't affect your ability to also find new factors)