Gimps
Prime95 v.27.7 Build 2
Prime95 is a software which searches for very large prime numbers. It has also gained a reputation for getting errors on computers which are even slightly unstable. If there is any problem with your CPU, your RAM,
GIMP v.2.8.8
Open-source app, short for GNU Image Manipulation Program, which comes bundled with many options and tools, and supports a large number of plugins.
OpenPFGW 3.6.3 B20120316 v.20120316
OpenPFGW is software that is designed to perform PRP and primality tests on numbers of specific forms.