Perform PRP test fast and easy. OpenPFGW is software that is designed to perform PRP and primality tests on numbers of specific forms. This software currently run on any x86 hardware with the support of George Woltman's gwnum library, the same library behind GIMPS and Prime95.

This is not a script language, it's more like a 'macro' front end to PFGW SCRIPT files. A bit like the #define BEGIN { hacks to make C look more like Pascal. However, it's remarkably deceptive how C-like the scripts can now look.
Basically, you write a script in the pseudo-C syntax, and then feed it to scriptify.pl which produces a SCRIPT file that performs the same job. I.e. there's nothing that these can do that SCRIPT files can't. It's purely cosmetic.

PrimeForm/GW (PFGW) is a primality tester. It tests whether or not a number is prime, or at least it tries to. It is able to test any arbitrary number, though some faster then others. About the name: PrimeForm speaks for itself, the GW comes from Yves Gallot and George Woltman. George Woltman wrote the extremely fast modular code available for this project (well he made it for Prime95, but allows us to use it ;) It is an 'Open Source' project and is ported to Windows, Linux, and MacIntel.

The license of this software is Free, you can free download and free use this calculator software.