Prime95
AutomatedFree Mersenne prime search and CPU stress-testing software distributed as part of GIMPS.
Active plans
1
Total changes
1
Last change
Jul 18, 2026
Price trend
no history
What we know about Prime95’s pricing
StableChanges in 12 months
1
Cadence
Only change tracked, 1mo ago
Direction
New plan recently added
Category position
—
Not enough peers tracked yet
Current pricing
Free
monthlyFree
- CPU stress testing
- Mersenne prime search participation
- Cross-platform: Windows, Mac OS X, Linux, FreeBSD
- Free GIMPS software license
- Regular version updates
Price history
Last 1 changes
| Date | Plan | Change | Old | New | Δ% |
|---|---|---|---|---|---|
| Jul 18, 2026 | Free | new plan | — | $0 | — |
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