Prime95 Icon


Details about this download:
File size:
5.38 MB
Size on disk:
5,638,539 B
File name:
File version:
Last modified:
Mar 29, 2019
Download mirrors:
Virus/malware test:
Operating system:
Windows x32 / x64
Software rating:
4.2 / 5

Download Prime95:

Notes about this download:

  • Tested to be virus-free [Tested with 26 programs]
  • No installers or download managers
  • Trust: 94 / 100 [Trusted - High confidence]
  • Download link works [Code: 200]
  • Hosted in the United States

An extensive CPU stress test which searches for prime numbers

All files are in their original form. does not modify or wrap any download with download managers, custom installers or third party adware.

This download is distributed as a ZIP archive ( and and requires decompression with a competent program.

This prime number software download is currently available as version 29.8. Compatibility may vary, but generally runs on Microsoft Windows systems. Prime95 has been tested for viruses, please refer to the tests on the "Virus Tests" page. It is published by Mersenne Research.