Go Back > Prime Search Projects > Prime Sierpinski Project

Thread Tools
Old 2004-08-09, 15:05   #1
ltd's Avatar
Apr 2003

22·193 Posts
Default Quality of results


i made some checks in the database to get some information about the quality of the received results.

We have made 89227 PRP tests so far
Double checks done 17213.

Form these double checks 13 have been different to the first time checks.
For 12 of them the reason is known. These are tests which where calculated with an llr.exe version which contained a bug.

So at the end we have 1 out of 17213 test with a real wrong residue.

Conclusion: At the moment there is no need to do more double checks.
But if somebody still wants to do some due to the fact that he has a very slow PC no problem there are enough double checks left.

ltd is offline   Reply With Quote
Old 2004-08-09, 15:11   #2
Mystwalker's Avatar
Jul 2004
Potsdam, Germany

3·277 Posts

Well, one advantage of doing doublechecks is to raise the lower bounds of sieving, slightly improving performance.
So, it's definitely not bad to do double checks. :)
Mystwalker is offline   Reply With Quote
Old 2004-08-10, 22:09   #3
Citrix's Avatar
Jun 2003

30618 Posts

Mystwalker, I agree with Lars. Changing the bounds from 100K to 200K will make very little difference and so on. It might take a second less for a billion, such small time changes don't make a significant difference.

But, if we find a prime, we might gain a few minutes for each billion, hence it is best to look for new primes than to double check for right now. Later in the project when we have more computers and can expend some computers, we can use some for the double check effort.

But still if some one has slow computers they can definately participate in the double check effort.

Citrix is offline   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Results ET_ FermatSearch 32 2021-08-10 02:30
gfn results ET_ FermatSearch 12 2021-02-20 03:01
I'm having quality issues on skylake as well nucleon Software 14 2016-08-24 07:42
Combining low quality random numbers sources only_human Miscellaneous Math 3 2016-05-20 05:47
CPU Results last 24 hrs Unregistered Information & Answers 3 2010-07-26 00:49

All times are UTC. The time now is 07:34.

Wed Dec 8 07:34:42 UTC 2021 up 138 days, 2:03, 1 user, load averages: 1.87, 2.02, 1.76

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.