mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware > GPU Computing

Reply
 
Thread Tools
Old 2019-10-13, 04:24   #12
GP2
 
GP2's Avatar
 
Sep 2003

2,579 Posts
Default

Quote:
Originally Posted by petrw1 View Post
In the past several months Ryan Propper found a first factor for about a dozen exponents under 9999.

Further I hope to be proven wrong soon, but I tend to believe that since Ryan hasn't reported any Factors recently he has done all the ECM for these small exponents that he sees value in.
He is still reporting factors that aren't first factors. Quite a few of them in fact. For instance, for M2351 just yesterday.

He might still be looking for first factors, but they are obviously getting harder to find.
GP2 is offline   Reply With Quote
Old 2019-10-13, 06:11   #13
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

19×223 Posts
Default

Quote:
Originally Posted by petrw1 View Post
...Since they were not reported these curves must be redone in order to be recorded.
If he did his ECM in a way that he can indicate the number of curves done at each level it could save the rest of us a lot of ECM work that has no chance of finding a factor.
Why must they be redone? Just increase the bounds by 5 digits, or 10, and rest assured that if he didn't do that many that you'll still find all the factors that smaller bounds would have found.

I mean, I agree it would be nice if he revealed a rough estimation of how much ECM he's doing, but if he doesn't we can take some guesses and continue ECM accordingly.
VBCurtis is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bug in generating ECM work for small exponents monsted PrimeNet 6 2019-09-28 03:25
Sieving with powers of small primes in the Small Prime variation of the Quadratic Sieve mickfrancis Factoring 2 2016-05-06 08:13
P-1 on small exponents markr PrimeNet 18 2009-08-23 17:23
256KB L2 limited to small exponents, but 8MB L3 xorbe Information & Answers 2 2009-02-08 05:08
New "small" exponents available Prime95 PrimeNet 6 2006-05-21 15:38

All times are UTC. The time now is 22:19.

Wed Aug 5 22:19:08 UTC 2020 up 19 days, 18:05, 2 users, load averages: 1.08, 1.43, 1.56

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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.