mersenneforum.org  

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

Reply
 
Thread Tools
Old 2009-09-04, 00:42   #1
NBtarheel_33
 
NBtarheel_33's Avatar
 
"Nathan"
Jul 2008
Maryland, USA

5×223 Posts
Question Assignment keys

Is there any way of retrieving the hex key for an assignment after it has been assigned, but the original prime.log and worktodo.txt are no longer available?

Can this be done via the server, or does George have to manually look them up? (A nice feature might be for an account owner to be able to grab them off of some server-generated report).

Thanks!
NBtarheel_33 is offline   Reply With Quote
Old 2009-09-04, 01:20   #2
Batalov
 
Batalov's Avatar
 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

59×157 Posts
Default

If you have an account on http://www.mersenne.org/
login, go to "Assignments" http://www.mersenne.org/workload/
Then "View Source". The keys are there, next to each number (name="..." field)

Note: "View Source" for that page works in mozilla, but for some reason not in IE.
Batalov is offline   Reply With Quote
Old 2009-09-04, 03:44   #3
markr
 
markr's Avatar
 
"Mark"
Feb 2003
Sydney

3×191 Posts
Default

Handy - thank you!
markr is offline   Reply With Quote
Old 2009-09-04, 04:10   #4
NBtarheel_33
 
NBtarheel_33's Avatar
 
"Nathan"
Jul 2008
Maryland, USA

5·223 Posts
Default

Yeah, thanks a lot! I wonder why this isn't just made into a feature on v5, so you don't have to use a hack like this.

BTW, View Source worked fine for me in IE8.
NBtarheel_33 is offline   Reply With Quote
Old 2009-09-04, 05:03   #5
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

217748 Posts
Default

Quote:
Originally Posted by NBtarheel_33 View Post
BTW, View Source worked fine for me in IE8.
And Opera.
Uncwilly is offline   Reply With Quote
Old 2009-09-04, 10:07   #6
gjmccrac
 
gjmccrac's Avatar
 
Aug 2009
Ontario, Canada

2×5×13 Posts
Default Assignment keys

Quote:
Originally Posted by Uncwilly View Post
And Opera.
And Chrome
gjmccrac is offline   Reply With Quote
Old 2009-09-04, 11:04   #7
garo
 
garo's Avatar
 
Aug 2002
Termonfeckin, IE

3·919 Posts
Default

Thanks Batalov. This is very handy!
garo is offline   Reply With Quote
Old 2009-09-18, 00:43   #8
apocalypse
 
Feb 2003

2·3·29 Posts
Default

This is a related question, but is there a way to find out what bounds a TF assignment should have?

I got mprime running on my "old" computer and set it to TF and got a few assignments after I accidentally got the partition mprime was on
mounted read-only, so worktodo.txt wasn't updated. After I fixed the partition, those assignments weren't re-fetched during subsequent communication with PrimeNet.

I've since switched it to do P-1, and I'm planning to release the TF assignments, so it's not critical, but I'm curious.
apocalypse is offline   Reply With Quote
Old 2009-09-18, 06:06   #9
NBtarheel_33
 
NBtarheel_33's Avatar
 
"Nathan"
Jul 2008
Maryland, USA

45B16 Posts
Default

Quote:
Originally Posted by apocalypse View Post
This is a related question, but is there a way to find out what bounds a TF assignment should have?
Yes. Do a lookup on the exponent in question ("Exponent Status" is what you want to look at). It should indicate the highest bit level to which that exponent has been factored; you would want to start TF'ing to the next bit level. For instance, if you saw that M12345678 had been factored to 2^66, and you had a TF assignment, you would know that you want to carry it to 2^67, so the worktodo.txt line would read:

Factor=12345678,66,67 (TF M12345678, starting at 2^66, finishing at 2^67).

Hope this helps you out!
NBtarheel_33 is offline   Reply With Quote
Old 2009-09-18, 08:01   #10
lycorn
 
lycorn's Avatar
 
Sep 2002
Oeiras, Portugal

22×192 Posts
Default

Quote:
Originally Posted by apocalypse View Post
This is a related question, but is there a way to find out what bounds a TF assignment should have?

May be this is what you mean. The following values were taken from a source file of the Prime95 program. The left column defines the trial factoring limit for each of the (lower) bounds listed in the right one. For example, numbers with exponents higher than 58520000 and lower than 75670000 will be factored to 70 bits.

#define FAC80 516000000L
#define FAC79 420400000L
#define FAC78 337400000L
#define FAC77 264600000L
#define FAC76 227300000L
#define FAC75 186400000L
#define FAC74 147500000L
#define FAC73 115300000L
#define FAC72 96830000L
#define FAC71 75670000L
#define FAC70 58520000L
#define FAC69 47450000L
#define FAC68 37800000L
#define FAC67 29690000L
#define FAC66 23390000L

Last fiddled with by lycorn on 2009-09-18 at 08:02
lycorn is online now   Reply With Quote
Old 2009-09-19, 01:01   #11
apocalypse
 
Feb 2003

2·3·29 Posts
Default

Thanks!

I guess there's no way to know exactly what upper bounds the server thinks those assignments should have, but I can guess that it is 1 less than the value from the code, since the last bit of TF should be done after P-1.
apocalypse is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
factoring 90 512-bit RSA Keys in 3 minutes Mini-Geek Lounge 1 2015-03-17 17:27
openssl weak keys Unregistered Information & Answers 1 2011-10-07 22:14
Asymetric keys JohnFullspeed Factoring 3 2011-07-23 12:24
Factoring RSA Keys Romulas Factoring 35 2010-07-15 02:42
Where I find the best program to it factor keys? I use AMD. chrow Factoring 5 2004-02-19 10:15

All times are UTC. The time now is 14:16.

Mon Jan 25 14:16:53 UTC 2021 up 53 days, 10:28, 0 users, load averages: 1.71, 2.25, 2.28

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.