Prime95 is a freeware portable program which finds Mersenne prime numbers. This application can be used for benchmark, burn-in test or research under windows/Linux/Unix/Mac.
Prime95 is the name of a Windows-based software application written by George Woltman that is used by GIMPS, a distributed computing project dedicated to finding new Mersenne prime numbers. The Linux-based version is called MPrime.Over the years, this program has become extremely popular among PC enthusiasts and overclockers as a stability testing utility. It includes a "Torture Test" mode designed specifically for testing PC subsystems for errors in order to help ensure the correct operation of Prime95 on that system, which effectively stress-tests a PC.
There are versions for Windows/Linux/Unix/Mac OS, 32-bit & 64-bit versions for all operating systems. Unix and non-x86 users should check out Ernst Mayer's Mlucas page and the Glucas page for guidance as to which code is best for their platform.
At our "Portable download link" you can find "Setup Instructions for New Users". Go to "Step 2" and download the appropriate free program version for your OS. For Windows you can download "p95v259.zip" and extract it into a folder of your choice. Then run "prime95.exe".
Enjoy!