Windows · Developer Tools
Great Internet Mersenne Prime Search (GIMPS)
Find Mersenne Prime numbers or stress test systems
Version 30.19.20 · by George Woltman
Official site: mersenne.org
About Great Internet Mersenne Prime Search (GIMPS)
The [Great Internet Mersenne Prime Search (GIMPS)](https://www.mersenne.org) is a collaborative project of volunteers
using the Prime95 client to participate in a distributed computing effort to find [Mersenne Prime numbers](http://www.utm.edu/research/primes/mersenne.shtml).
The Prime95 client can also be used as a stress testing tool. The Prime95 client includes a "torture test" that places
a heavy computational load on a system. Continuous computations are run and checked against tolerances while they are
executing with the final results being compared to the known correct answers.

## Package Parameters
The following package parameter can be set:
* `/AddToDesktop` - this puts a shortcut on your desktop to Prime95.
This parameter can be passed to the installer with the use of `--params`.
For example: `--params '"/AddToDesktop"'`.
To have choco remember parameters on upgrade, be sure to set `choco feature enable -n=useRememberedArgumentsForUpgrades`.
## Notes
* If support for 32-bit Windows XP is required use the legacy version [Prime95 29.8.6](https://chocolatey.org/packages/prime95/29.8.6).
```powershell
choco install prime95 --version 29.8.6
choco pin pin add -n=prime95 --version 29.8.6
```
* This package is automatically updated using the [Chocolatey Automatic Package Update Model (AU)](https://github.com/majkinetor/au/blob/master/README.md).
If you find it is out of date by more than a day or two, please contact the maintainer(s) and let them know the package is no longer updating correctly.
How to install Great Internet Mersenne Prime Search (GIMPS)
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Chocolatey you can install and update it with: choco install great-internet-mersenne-prime-search-gimps
- Open Great Internet Mersenne Prime Search (GIMPS) once it finishes installing.
Frequently asked questions
Is Great Internet Mersenne Prime Search (GIMPS) free to download?
Yes. The Download button sends you to mersenne.org, the developer's official site, where Great Internet Mersenne Prime Search (GIMPS) is available to download. Grabware doesn't host or modify any files.
What is the latest version of Great Internet Mersenne Prime Search (GIMPS)?
The version listed here is 30.19.20, published /Date(1717. The developer's site always has the newest release.
How do I install Great Internet Mersenne Prime Search (GIMPS) from the command line?
With Chocolatey, run: choco install great-internet-mersenne-prime-search-gimps. This installs it from the official source and keeps it updated.
Is Great Internet Mersenne Prime Search (GIMPS) safe?
Great Internet Mersenne Prime Search (GIMPS) downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.
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