mersenneforum.org Search Results
 Register FAQ Search Today's Posts Mark Forums Read

 Showing results 1 to 25 of 1000 Search took 0.46 seconds. Search: Posts Made By: Prime95
 Forum: Data 2021-04-21, 20:40 Replies: 425 Views: 60,805 Posted By Prime95 Unless, I've misunderstood the math (not an... Unless, I've misunderstood the math (not an insignificant possibility) or there is a bug, then the estimate should be spot on. I'm using Mihai's P-1 smoothness probability estimator. Whereas, P-1...
 Forum: Data 2021-04-21, 20:36 Replies: 425 Views: 60,805 Posted By Prime95 One P+1 run would be just like running one more... One P+1 run would be just like running one more ECM curve. The P+1 "curve" stands little chance of success just like running one ECM curve. But at least P+1 would be faster than the one ECM curve....
 Forum: Data 2021-04-21, 20:29 Replies: 425 Views: 60,805 Posted By Prime95 4.7M expo, TF to 2^68 On further thought... 4.7M expo, TF to 2^68 On further thought exponent size does not affect probability calculations. Only TF,B1,B2. [Apr 21 16:25] P+1 on M4715201 with B1=250000, B2=5000000 [Apr 21 16:25] Chance...
 Forum: Data 2021-04-21, 20:19 Replies: 425 Views: 60,805 Posted By Prime95 15.75M expo, 2^69 TF [Apr 21 16:14] P+1 on... 15.75M expo, 2^69 TF [Apr 21 16:14] P+1 on M15750199 with B1=250000, B2=5000000 [Apr 21 16:14] Chance of finding a factor assuming no ECM has been done is an estimated 0.366% [Apr 21 16:15]...
 Forum: Data 2021-04-21, 20:11 Replies: 425 Views: 60,805 Posted By Prime95 31M expo, TF'ed to 2^75 [Apr 21 16:05] P+1... 31M expo, TF'ed to 2^75 [Apr 21 16:05] P+1 on M31500457 with B1=250000, B2=5000000 [Apr 21 16:05] Chance of finding a factor assuming no ECM has been done is an estimated 0.16% [Apr 21 16:06]...
 Forum: Data 2021-04-21, 20:00 Replies: 425 Views: 60,805 Posted By Prime95 You also need to clear the Pplus1BestB2 option to... You also need to clear the Pplus1BestB2 option to get the quick probability at startup. Now that I've fixed the crash bug reading stage 2 save file, I'll gather some of this data and post it here.
 Forum: Data 2021-04-21, 19:35 Replies: 425 Views: 60,805 Posted By Prime95 You'll get better chances with smaller exponents... You'll get better chances with smaller exponents -- less TF has been done. I was getting 1+% estimates in the 4.7M range with B1=1000000.
 Forum: Data 2021-04-21, 19:33 Replies: 425 Views: 60,805 Posted By Prime95 P-1 and P+1 search space is almost completely... P-1 and P+1 search space is almost completely independent.
 Forum: Software 2021-04-21, 19:30 Replies: 161 Sticky: Prime95 v30.4/30.5/30.6 Views: 15,137 Posted By Prime95 Fixed. Build 2 now available. Links in post... Fixed. Build 2 now available. Links in post #150.
 Forum: Data 2021-04-21, 17:26 Replies: 425 Views: 60,805 Posted By Prime95 Primenet accepts P+1 results, but does not... Primenet accepts P+1 results, but does not recognize/coordinate P+1 assignments.
 Forum: Data 2021-04-21, 17:24 Replies: 425 Views: 60,805 Posted By Prime95 We do know that P+1 is better than ECM -- roughly... We do know that P+1 is better than ECM -- roughly the same chance of success but several times faster. We do know that TF becomes more and more expensive the smaller the exponent. We also know...
 Forum: Data 2021-04-21, 17:16 Replies: 425 Views: 60,805 Posted By Prime95 We're learning about best bounds selection... We're learning about best bounds selection together. I suggest picking one exponent and try a B1/B2 combination -- plus specify the TF bit level. Start prime95 and it will tell you the chance of...
 Forum: Software 2021-04-21, 05:19 Replies: 53 Sticky: LLR version 3.8.24 released. Views: 13,160 Posted By Prime95 Requires changes to LLR code. The biggest... Requires changes to LLR code. The biggest change is "combo" functions, like (a+b)*c. This can be done with 3 reads and 1 write. Compare that to separate calls: a+b (2 reads, 1 write), sum * c...
 Forum: Software 2021-04-21, 02:42 Replies: 161 Sticky: Prime95 v30.4/30.5/30.6 Views: 15,137 Posted By Prime95 Yes, nth_run=3 selects a random starting value. ... Yes, nth_run=3 selects a random starting value. Given the massive number of exponents in need of P+1, I recommend not doing two P+1 runs on the same exponent. That said, do whatever you find fun.
 Forum: Software 2021-04-21, 00:53 Replies: 53 Sticky: LLR version 3.8.24 released. Views: 13,160 Posted By Prime95 I don't know if Jean Penne is still the... I don't know if Jean Penne is still the maintainer of LLR, but gwnum version 30.6 has some new features that might speed up LLR.
 Forum: Data 2021-04-21, 00:47 Replies: 425 Views: 60,805 Posted By Prime95 New tool Don't get too excited, but.... Prime95 30.6 has P+1 factoring available. Maybe this will help a tiny bit with some of the more stubborn ranges. See...
 Forum: Software 2021-04-21, 00:40 Replies: 161 Sticky: Prime95 v30.4/30.5/30.6 Views: 15,137 Posted By Prime95 For the adventurous Prime95 version 30.6 build 2 is available. I consider the new features to be lightly tested. No need to upgrade unless you are doing ECM or care to try out the new P+1 factoring work. You...
 Forum: PrimeNet 2021-04-20, 00:23 Replies: 4 Views: 142 Posted By Prime95 The server shows that the 100M expo is assigned... The server shows that the 100M expo is assigned to you: https://www.mersenne.org/report_exponent/?exp_lo=332646233&exp_hi=&full=1&ecmhist=1 Are all the others showing as assigned to you too? ...
 Forum: Software 2021-04-19, 01:56 Replies: 161 Sticky: Prime95 v30.4/30.5/30.6 Views: 15,137 Posted By Prime95 Can you send the save file and worktodo.txt? ... Can you send the save file and worktodo.txt? Thanks.
 Forum: PrimeNet 2021-04-19, 01:54 Replies: 9 Views: 254 Posted By Prime95 Yup, mea culpa, as Chris likes to say "stupid... Yup, mea culpa, as Chris likes to say "stupid programmer error".
 Forum: PrimeNet 2021-04-18, 23:06 Replies: 9 Views: 254 Posted By Prime95 Might have to bash me, off to check the Linux... Might have to bash me, off to check the Linux code....
 Forum: PrimeNet 2021-04-18, 20:43 Replies: 9 Views: 254 Posted By Prime95 Apparently someone at Microsoft thought it would... Apparently someone at Microsoft thought it would be really cool if FindFirstFile returns xxx.proof.tmp when asking for all file names matching *.proof
 Forum: Data 2021-04-14, 03:33 Replies: 17 Views: 549 Posted By Prime95 Yes, useless. I'm not even sure it will be... Yes, useless. I'm not even sure it will be useful to the let's get number of unfactored exponents below 20M crowd. The biggest advantage I see to studying P+1 is that stage 2 should be faster...
 Forum: Data 2021-04-14, 00:09 Replies: 17 Views: 549 Posted By Prime95 Lookup M4933 at mersenne.ca to see how 14620...... Lookup M4933 at mersenne.ca to see how 14620... factors. To make understanding the P+1 algorithm even more complicated, the 50% of the time the algorithm misses P+1 factors, the algorithm was...
 Forum: Data 2021-04-14, 00:04 Replies: 17 Views: 549 Posted By Prime95 Caveat: I'm not a P+1 expert. When we... Caveat: I'm not a P+1 expert. When we do P-1 on Mersenne numbers factors are of the form f=2kp+1, thus we find a factor f when k=(f-1)/(2p) is B1/B2-smooth. With P+1, factors are of the...
 Showing results 1 to 25 of 1000

All times are UTC. The time now is 13:34.

Thu Apr 22 13:34:39 UTC 2021 up 14 days, 8:15, 0 users, load averages: 2.27, 2.33, 2.42