From the DESCR: Great Internet Mersenne Prime Search (GIMPS), a distributed computing project dedicated to finding Mersenne primes. This program is also a good stress test for the CPU, memory, L1 and L2 caches, CPU cooling, and case cooling.
amd64 only for now (I don't have an i386 to test), but the patches should apply to i386 as well.
Enjoy!
gimps-28.7.tgz
Description: Binary data