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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
• 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 (0-2³²)
  • 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 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