SRBase

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[[File:{{#setmainimage:SRbase.png}}|alt=SRbase logo image|center|frameless]]

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 project is in collaboration with the Mersenne CRUS project. The server is running on a private computer in a VM.

BEHIND SRBASE - A SHORT GUIDE

  • 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

Project team / Sponsors

  • Gary - Mersenne/CRUS admin - results
  • Odicin - scripts
  • walli - coding
  • rebirther - SRBase admin

Scientific results