SRBase

SRBase

log in

About SRBase

SRBase is a mathematical research project that uses Internet-connected computers trying to solve Sierpinski / Riesel Bases up to 1030. You can participate by downloading and running a free program on your computer.

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

The invitation code for creating new accounts is pillepalle

Project people:

Gary - Mersenne/CRUS admin - results
Odicin - scripts
rebirther - SRBase admin

Project status:

Riesel Base: 393/1031 proven (02.06.2018)
Sierpinski Base: 384/1032 proven (19.02.2017)
273 unstarted bases (24.02.2018)

Join SRBase

Read our rules and policies
This project uses BOINC. If you're already running BOINC, select Add Project. If not, download BOINC.
When prompted, enter
http://srbase.my-firewall.org/sr5/
If you're running a command-line version of BOINC, create an account first.
If you have any problems, get help here.

Returning participants

Your account - view stats, modify preferences
Server status
Teams - create or join a team
Certificate
Applications

Community

Infos

Published papers

Behind SRBase

Hardware requirements

non AVX AMD/Intel CPU 2.3Gh+
Recommended: AVX,AVX2/FMA3 compatible AMD/Intel CPU 2.3Ghz+, HT off

User of the day

10k in Sierpinski / Riesel Base credit

10k in Riesel Base credit

10k in Sierpinski Base credit

10k in Sierpinski / Riesel Base - short credit

100k in Sierpinski / Riesel Base - long credit

500k in project total credit

10k in Sierpinski / Riesel Base - average credit

10k in Riesel Base - short credit

10k in Sierpinski Base - short credit

enjoy m8

News

base R579 proven
On 24th of May, JD2K, a member of the team Gridcoin found the last prime for base R579.
The prime 104*579^222402-1 has 614428 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.

Good job! 2 Jun 2018, 15:04:08 UTC · Comment

Domain issues
Anyhow the connection was lost to the domain, the server was still running, I did an update for the domain / IP and all is back online. 3 May 2018, 5:44:04 UTC · Comment

apps update to v3.8.21
All apps were updated to v3.8.21

Only 2 things were fixed:

No new feature in this LLR version, but the AVX threading bug is here fixed.
This bug caused often false results after an error recovery, due to a misuse of the POSTFFT feature while calling gwstartnextft() function.

This LLR version is linked with the Version 28.14 of George Woltman's gwnum library.
The only thing new from 28.13 is better FFT selections for AMD Ryzen CPUs.

Pls note that the FLOPs are back to 0. This means inaccurate runtimes at the beginning. After some reported results the runtime will be correct again.

If you find any errors pls report them here. More work will be added soon. 22 Apr 2018, 20:31:02 UTC · Comment

planned power outage on 24th (done)
There are some maintenances on the local electricity. I will stop the server on this day. Maybe later in the evening the server is back online. 18 Apr 2018, 17:39:52 UTC · Comment

Notification mail changed
Due a complete blocking of rebirther@web.de by my mail provider I have decided to change the email address to srbase2018@gmail.com. I have tested the mail system and its working.

Every 2 days the old email was blocked and I was able to reactivating by changing password but now I need to call the provider to get the access again. 19 Mar 2018, 18:16:41 UTC · Comment

... more

News is available as an RSS feed RSS

Copyright © 2014-2018 BOINC Confederation / rebirther