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• List of Mersenne Prime numbers
• GIMPS progress visualization
• Trial-factoring assignment >1000M

• Look up exponent / factor

• Calculate CPU Credit for any assignment
• CPU Throughput calculator
• Prime95 benchmarks
• Estimated GPU trial-factoring performance
• Estimated GPU Lucas-Lehmer performance
• P-1 probability calculator

• Exponents that were poorly P-1 factored
• Factors missed by P-1
• Exponents with less TF than expected
• Exponents with the most known factors
• P-1 factors found via Brent-Suyama
• Smoothest P-1 factors
• Top P-1 factors of Mersenne numbers
• Probable prime (PRP) testing

• Worktodo balancer
• Split large assignment blocks to workers
• Worktodo skip known-factor assignments
• P-1 to TF worktodo rewriter
• TF worktodo bit level splitter

• Graphs of Known Factors
  • Known factor bit depths (0-10¹⁰)
  • Known factor bit depths (0-2³²)
  • Known factor bit depths (0-999M)
  • Known factor bit depths (0-192M)
  • Known factor bit depths (0-384M)

• Trial-Factoring bit-depth lookup
• Prime Factorization for small numbers
• Calculate number of digits in an exponent
• Convert GIMPS Factoring Effort to PFactor

External Links:

• Mersenne Forum
• Prime Wiki
• GPU to 72 by Chris Halsall
• GIMPS Status
• Factorization using ECM
• Mersenne software download mirror

Calculate bit size of factor:

Assignments are valid for a maximum of 10 days, but it's preferred that you take only about one day's worth of assignments at once.
Ideally you should use the provided scripts (Windows | Linux | Python) to automate getting assignments and submitting results.
If you need to submit manual results you can do so here.

• Windows batch file for automated work fetch/submit
• Linux bash file for automated work fetch/submit
• Python file for automated work fetch/submit