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
- Gary - Mersenne/CRUS admin - results
- KEP - statistic
- Odicin - scripts
- rebirther - SRBase admin
- Riesel Base: 392/1031 proven (18.09.2017)
- Sierpinski Base: 384/1032 proven (19.02.2017)
282 unstarted bases (18.09.2017)
706,136,815,151,905 Total k's remaining (01.06.2017)
- non AVX AMD/Intel CPU 2.3Gh+
- Recommended: AVX,AVX2/FMA3 compatible AMD/Intel CPU 2.3Ghz+, HT off
User of the day
BOINC@Poland 4 ever!!!
SRBase - 3 years review
The project has passed the third year.
Compared with last years the following process was made:
2014-2015 - 87M WUs processed, 1 base solved, 314 bases unstarted
2015-2016 - 88M WUs processed, 5 bases solved, 297 bases unstarted
2016-2017 - 99M WUs processed, 5 bases solved, 282 bases unstarted
in total - 274M WUs processed, 11 bases solved, 282 bases unstarted
The computing power was beyond the 40TFLOP mark. KEP is still working on a more precise stats overview and will be released maybe in January 2018 so stay tuned.
The next upcoming llr app will have a new gwnum lib with full AMD Ryzen support but I dont know when it will be released.
Due the lack of available sievefiles there are some gaps in the work generation. The remaining primes for these bases are very high, the tests are going over a million. The project cannot handle so many files into one folder thats why they must be splitted into some batches.
The yoyo@home project took over the sieving part for CRUS / SRBase. More and more new sievefiles will be available in the future in a short time period. If you want to help there enable sieving in prefs.
A big thx to the Gridcoin team for the amazing computing power in the past months and of course all the other users / teams spend their power to bring the project forward.
For those who are interested in the public paper for SRBase this is now ready for download.. I will add a link on the frontpage soon. If you have any questions about it let us discuss this in the forum.
18 Nov 2017, 22:43:06 UTC
base S263 cancelled (average app)
I have forgot to change and removed all WUs, 200 WUs were sent out before I noticed that. Please abort all of this batch. Sorry for the trouble.
12 Nov 2017, 17:47:43 UTC
Parsing problems with BOINC client 7.0.80
If you are still using this version please upgrade to a newer client. Some results files are corrupt to parsing issues.
30 Sep 2017, 9:33:59 UTC
base R514 proven
On 8th of September, Deltik, a member of the team Gridcoin found the last prime for base R514.
The prime 30*514^424652-1 has 1.151.218 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.
18 Sep 2017, 20:00:32 UTC
base R159 proven
On 14th of July, denravonska, a member of the team Gridcoin found the last prime for base R159.
The prime 172*159^561319-1 has 1.235.689 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.
6 Aug 2017, 6:18:16 UTC
News is available as an RSS feed