Currently there may be errors shown on top of a page, because of a missing Wiki update (PHP version and extension DPL3).
Navigation
Topics Help • Register • News • History • How to • Sequences statistics • Template prototypes

Sierpiński-Riesel Base 5

From Prime-Wiki
Revision as of 20:09, 23 April 2019 by Dylan14 (talk | contribs) (update status and links)
Jump to: navigation, search

The Sierpiński-Riesel Base 5 Project is a distributed computing project. It was formally managed by users of mersenneforum.org, and is currently a subproject on PrimeGrid.

Goal

Sierpiński-Riesel Base 5 tries to prove that k=159986 is the smallest possible Sierpiński number base 5 and that k=346802 is the smallest possible Riesel number base 5. To prove this, one must find primes for all k below the smallest known number.

How to participate

Participants in either of the projects reserve a k in the forum, then use NewPGen to sieve and then LLR to PRP test (for primality). After that, users unreserve their k again if no primes are found. Instructions to the project can be found at OmbooHankvalds guidepages.

Status

As of this moment (2019-04-23), there are 32 Sierpiński and 69 Riesel base 5 candidate k left, which need primes.

Results

Primes from the project can be seen on the status-page of either the Sierpińskis or the Riesels.

External links