SRBase

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SRBase is a BOINC platform volunteer computing project and needs your help to advance mathematical research.

Why SRBase?

For every base (b) for the forms k*b^n+1 and k*b^n-1, there is a k-value for each form that has been conjectured to be the lowest 'Sierpinski value' (+1 form) or 'Riesel value' (-1 form) that is composite for all values of n >= 1.

Goal

Prove Riesel and Sierpinski conjectures for bases <= 1030 that are not currently being worked on by other projects or efforts.

Methods

The server is famously running on a private computer in a VM and may, or may not, be located in a closet. Recent advancements include updating the application from LLR2 to PRST v10, Multi GPU sieving and Intel® Arc support.

The project is in collaboration with:

1. Great Internet Mersenne Prime Search where SRBase's Trial Factoring sieving on GPU is working on the 100-1000M range and has almost completed the 74-75 bit level.
2. Mersenne CRUS project

• Work reservation and preparation - http://www.mersenneforum.org/forumdisplay.php?f=81 The link is used for any base reservation. This avoids any duplicate work from other users
• Work creation - All bases over 1M tests (lower ranges) will be split into pieces. Normally there are 2-3 batches, 25-50k, 50-60k, 60-100k. Most of the work is done in Excel
• Check results - merge all results to lresults.txt
• Remove primes from a sievefile with the srfile app
• BEHIND SRBASE - A SHORT GUIDE

Project team / Sponsors

• Gary - Mersenne/CRUS admin - results
• Prime95 - GIMPS admin - work distribution
• Odicin - scripts
• walli - coding
• deletenull - GPU apps and compiling
• rebirther - SRBase admin

Scientific results

• Overall stats
• Riesel reservations
• Sierpinski reservations