mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Data

Reply
 
Thread Tools
Old 2020-11-26, 01:06   #1
alpertron
 
alpertron's Avatar
 
Aug 2002
Buenos Aires, Argentina

23·167 Posts
Default Too few factors found in 600M to 620M

I've just looked at https://www.mersenne.ca/status/tf/0/1/2/60000 and I found that there should be some hardware error:

21192 factors in the range 600M-610M today in the 72-bit range: only 3 factors found.
3268 factors in the range 610M-620M today in the 72-bit range: only 2 factors found.

In the first case there should be about 300 factors (maybe 200, but not 3). In the second case there should be about 45 factors, not 2.

It appears that the GPU being used is not helping the project.

Last fiddled with by alpertron on 2020-11-26 at 01:06
alpertron is offline   Reply With Quote
Old 2020-11-26, 02:13   #2
S485122
 
S485122's Avatar
 
Sep 2006
Brussels, Belgium

30758 Posts
Default

Quote:
Originally Posted by alpertron View Post
I've just looked at https://www.mersenne.ca/status/tf/0/1/2/60000 and I found that there should be some hardware error:

21192 factors in the range 600M-610M today in the 72-bit range: only 3 factors found.
3268 factors in the range 610M-620M today in the 72-bit range: only 2 factors found.

In the first case there should be about 300 factors (maybe 200, but not 3). In the second case there should be about 45 factors, not 2.

It appears that the GPU being used is not helping the project.
Probably a case of submitting the results with factors found one day and the others the next. On the 24th, 162 successful and 0 unsuccessful attempts where reported in the 605M range.

Jacob
S485122 is offline   Reply With Quote
Old 2020-11-26, 02:25   #3
Mark Rose
 
Mark Rose's Avatar
 
"/X\(‘-‘)/X\"
Jan 2013

2·31·47 Posts
Default

Appears to be so. Looking over a week and the numbers look reasonable: https://www.mersenne.ca/status/tf/0/7/2/60000
Mark Rose is offline   Reply With Quote
Old 2020-11-26, 02:28   #4
alpertron
 
alpertron's Avatar
 
Aug 2002
Buenos Aires, Argentina

23·167 Posts
Default

Thanks. So this was a false alarm.
alpertron is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Nearly all Factors up to 2^69 found between 2.9G and 2.95G Kalli Hofmann Marin's Mersenne-aries 12 2019-11-06 11:49
No factors found aketilander PrimeNet 9 2011-05-17 11:32
CPU Time and Factors Found Rodrigo Operation Billion Digits 8 2010-08-14 20:36
500M-600M Range moo LMH > 100M 15 2005-10-21 01:10
How to find factors I found with TF? edorajh PrimeNet 3 2004-10-01 19:16

All times are UTC. The time now is 07:39.

Sun Nov 29 07:39:22 UTC 2020 up 80 days, 4:50, 3 users, load averages: 1.16, 1.10, 1.05

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.