mersenneforum.org  

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

Reply
 
Thread Tools
Old 2016-01-11, 17:30   #78
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

3·3,041 Posts
Default

The Scylla and Charybdis of any run is in its first and last ~50 iterations.
We may invest some additional bulletproofing in those.

But then again, all of the CudaLucas, MLucas and Prime95 independent runs (and if we could get a run of Glucas ? *)
could not all be mistaken simultaneously (as well as using different FFT sizes). We will soon know.

_______________
* maybe not Glucas, 'cause all source repositories appear to be defunct now, see links from http://www.mersenne.org/primes/?press=M32582657 , http://glucas.sourceforge.net/
Batalov is offline   Reply With Quote
Old 2016-01-11, 17:33   #79
Prime95
P90 years forever!
 
Prime95's Avatar
 
Aug 2002
Yeehaw, FL

11011110111012 Posts
Default

Quote:
Originally Posted by Dubslow View Post
Can we get a confirmation that this would be a record prime? As opposed to smaller than the current record.
Yes. Ernst let slip that a 4M FFT was required.

As to official announcement, this may take some time. I need to write a press release, Scott needs to approve and gather his list of press contacts. Chris Caldwell needs to have his web site updated. GIMPS main page needs updating. Patience please.
Prime95 is offline   Reply With Quote
Old 2016-01-11, 17:38   #80
Dubslow
Basketry That Evening!
 
Dubslow's Avatar
 
"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

3·2,399 Posts
Default

Quote:
Originally Posted by Batalov View Post
The Scylla and Charybdis of any run is in its first and last ~50 iterations.
We may invest some additional bulletproofing in those.

But then again, all of the CudaLucas, MLucas and Prime95 independent runs (and if we could get a run of Glucas ? *)
could not all be mistaken simultaneously (as well as using different FFT sizes). We will soon know.

_______________
* maybe not Glucas, 'cause all source repositories appear to be defunct now, see links from http://www.mersenne.org/primes/?press=M32582657 , http://glucas.sourceforge.net/
I definitely considered trying to get it working as an excuse to get early access to the exponent, but... not having been updated in years, including dead websites and links, discouraged me.
Dubslow is offline   Reply With Quote
Old 2016-01-11, 17:47   #81
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

912310 Posts
Default

Well, there's a fun research project for you. Try archive.org, perhaps some other caching services, or try contacting Guillermo. His root web site is alive. :-) Email him, try to build, and so on...
Batalov is offline   Reply With Quote
Old 2016-01-11, 18:50   #82
aketilander
 
aketilander's Avatar
 
"Åke Tilander"
Apr 2011
Sandviken, Sweden

10668 Posts
Smile

Quote:
Originally Posted by Batalov View Post
Well, there's a fun research project for you. Try archive.org, perhaps some other caching services, or try contacting Guillermo. His root web site is alive. :-) Email him, try to build, and so on...
I am sure serveral participants of this forum has the software on their computers somewhere, maybe even me if I can get hold of one when the children are sleeping!
aketilander is offline   Reply With Quote
Old 2016-01-11, 18:53   #83
aketilander
 
aketilander's Avatar
 
"Åke Tilander"
Apr 2011
Sandviken, Sweden

23616 Posts
Default

Quote:
Originally Posted by aketilander View Post
I am sure serveral participants of this forum has the software on their computers somewhere, maybe even me if I can get hold of one when the children are sleeping!
Sorry, to my surprise this hamster does not have it!!
aketilander is offline   Reply With Quote
Old 2016-01-11, 19:21   #84
aketilander
 
aketilander's Avatar
 
"Åke Tilander"
Apr 2011
Sandviken, Sweden

2×283 Posts
Default Glucas

I find some (old) still downloadable Glucas sourcefiles here:

http://sourceforge.net/projects/glucas/

Last fiddled with by aketilander on 2016-01-11 at 19:25
aketilander is offline   Reply With Quote
Old 2016-01-11, 19:28   #85
Chuck
 
Chuck's Avatar
 
May 2011
Orange Park, FL

3×172 Posts
Default Does Prime95 hide prime discovery from the user?

As a participant who pays close attention daily to the progress of my LL testing, if my machine found a new prime would I immediately know? Or is this information disguised somehow and forwarded to George et al?
Chuck is offline   Reply With Quote
Old 2016-01-11, 19:54   #86
Mark Rose
 
Mark Rose's Avatar
 
"/X\(‘-‘)/X\"
Jan 2013

32·11·29 Posts
Default

Quote:
Originally Posted by Chuck View Post
As a participant who pays close attention daily to the progress of my LL testing, if my machine found a new prime would I immediately know? Or is this information disguised somehow and forwarded to George et al?
You would know. There's even a configuration option to make noise if a prime is found.
Mark Rose is offline   Reply With Quote
Old 2016-01-11, 20:05   #87
Madpoo
Serpentine Vermin Jar
 
Madpoo's Avatar
 
Jul 2014

29×113 Posts
Default

Quote:
Originally Posted by Mark Rose View Post
You would know. There's even a configuration option to make noise if a prime is found.
Which is on by default, isn't it? But I know I have my desktop muted nearly all the time and none of my servers have a speaker (or do they? I can't say I'd hear it in a server room even if so). Not that it matters because I'm pretty sure I disabled that option. Last thing I would want is some hideous beeping or something in a colocated server room. I'd get a phone call from the NOC asking me to shut it off. They walk the floors and if there's something making unusual noises, that's what they do (in case of bad fans on the verge of burnout...it's happened to me before).

I guess when it's finally public knowledge, we can ask the person, end the mystery. I don't actually know the answer.
Madpoo is offline   Reply With Quote
Old 2016-01-11, 21:18   #88
CRGreathouse
 
CRGreathouse's Avatar
 
Aug 2006

172616 Posts
Default

Hmm... I had someone contact me about what to do if they found a Mersenne prime, and the timing and size are roughly right. What are the odds?
CRGreathouse is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Oops fivemack Msieve 1 2017-11-30 17:30
Merging Computers OOPS petrw1 PrimeNet 2 2017-04-15 03:24
Oops (need help recovering factorization) Dubslow YAFU 6 2015-02-26 01:32
Oops i did it again. (Prime found) ltd Prime Sierpinski Project 21 2006-01-04 14:50
Oops! Xyzzy Lounge 4 2003-01-06 22:18

All times are UTC. The time now is 11:24.

Wed Oct 21 11:24:35 UTC 2020 up 41 days, 8:35, 0 users, load averages: 1.60, 1.58, 1.55

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.