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2011-02-24, 00:33   #23
Mini-Geek
Account Deleted

"Tim Sorbera"
Aug 2006
San Antonio, TX USA

4,271 Posts

Quote:
 Originally Posted by ppo factors in the exponent table are not equal to 2kp+1. Am I wrongly interpreting your table ? For instance in the second row: for P=4294967357 you list K=35000535 and Factor=34359738857, but if I am not mistaken, this factor gives a k value of 4. Can you tell me where I am wrong?
Here's how to interpret it:
A factor is known at k=4, and all potential factors through k=35000535 have been checked. (i.e. one known factor, with some progress beyond that)

2011-02-24, 05:15   #24
Rodrigo

Jun 2010
Pennsylvania

23·32·13 Posts

Quote:
 Originally Posted by ET_ Hi, as many of you recently used Factor, I deployed a server-based application to try and factor exponents above 232. The page is here. It is managed by a DB: just click on the numbers in the "#" column and make k rise Please feel free to visit and test it Luigi
Very neat, Luigi! It's nice to see instant results.

Now, if I could write a script that would tell my P75 to click every 5 seconds or so on one of those numbers, then I'd have a way for that old machine to contribute...

Rodrigo

 2011-02-24, 05:44 #25 firejuggler     "Vincent" Apr 2010 Over the rainbow 2·7·197 Posts a P75? under windows? well simple enough simply create a text file Code: FOR /L %%G IN (1,1,1489) DO wget.exe http://www.moregimps.it/mersenne-test/compute.php?id=%%G del compute.php* then name it at your convenience and change the extension to .bat you have to get wget in the same folder the only problem with this script is that it will 'test' all the exponent, even the already factored one. But this is the simpliest i can get. Last fiddled with by firejuggler on 2011-02-24 at 05:51
2011-02-24, 10:09   #26
ET_
Banned

"Luigi"
Aug 2002
Team Italia

483810 Posts

Quote:
 Originally Posted by firejuggler a P75? under windows? well simple enough simply create a text file Code: FOR /L %%G IN (1,1,1489) DO wget.exe http://www.moregimps.it/mersenne-test/compute.php?id=%%G del compute.php* then name it at your convenience and change the extension to .bat you have to get wget in the same folder the only problem with this script is that it will 'test' all the exponent, even the already factored one. But this is the simpliest i can get.
I don't think windows 95/98 has wget installed (my windows 7-64 bit doesn't have it).

You could just call the URL from a link using a simple random number generator to create the id.

There should also be a "task scheduler" application that lets you run anything every n seconds/minutes (please don't be too greedy)

Finally, I'm trying to implement links that allow automatization of simple tasks (like run some TF) on smallest/biggest factored/unfactored exponents.

Luigi

 2011-02-24, 10:15 #27 ppo     Aug 2004 italy 113 Posts ok, now I understand. Thanks a lot.
2011-02-24, 12:03   #28
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

281216 Posts

Quote:
 Originally Posted by ET_ I don't think windows 95/98 has wget installed (my windows 7-64 bit doesn't have it).
It is a GNU package and can be downloaded. There is even a MS-DOS version.

 2011-02-24, 13:01 #29 drh     Jan 2011 Cincinnati, OH 22×52 Posts I'm no mathematician, but I just happen to see this and found it interesting ... I'm sure it has no significance. Exponet (p) --- Factor 10(p)+14294967563 42949675631 4294967983 42949679831 4294972063 42949720631 4294972267 42949722671 4294973791 42949737911 4294980763 42949807631 4294982191 42949821911 4294983811 42949838111 4294996051 42949960511 4294999363 42949993631
2011-02-24, 14:08   #30
ET_
Banned

"Luigi"
Aug 2002
Team Italia

2×41×59 Posts

Quote:
 Originally Posted by drh I'm no mathematician, but I just happen to see this and found it interesting ... I'm sure it has no significance. Exponet (p) --- Factor 10(p)+14294967563 42949675631 4294967983 42949679831 4294972063 42949720631 4294972267 42949722671 4294973791 42949737911 4294980763 42949807631 4294982191 42949821911 4294983811 42949838111 4294996051 42949960511 4294999363 42949993631
They all have k=5...

Luigi

2011-02-24, 18:48   #31
kar_bon

Mar 2006
Germany

2·5·293 Posts

Here's a small WIN script for running automatically:

script called "runGIMPS.bat":
Code:
@echo off
:begin
echo.>>all.txt
wget -q -O in.txt "http://www.moregimps.it/mersenne-test/compute.php?id=%1"
copy all.txt+in.txt all.txt >nul
del in.txt
goto begin
Calling "runGIMPS.bat <index>" (for example "runGIMPS.bat 1") will run exponent 494967311 (index=1) automated (CTRL-C will stop this).

The results will collected in the file "all.txt" so you can look (while run over night) if there were a factor found.

The zip contains wget.exe and this DOS-batch.

Other idea:
- reading first the page which expos without any factor
- run any of those
Attached Files
 GIMPS_IT.zip (243.2 KB, 289 views)

 2011-02-24, 20:57 #32 Rodrigo     Jun 2010 Pennsylvania 3A816 Posts @kar_bon @firejuggler Wow, thank you so much! With the combined info from your posts (what to get + how to use it) I should be able to get this to work. And yes, I'll start with exponents that don't have any factors yet. It's been a hectic day today, but I can't wait to try this tomorrow. Will report! Rodrigo
2011-02-24, 21:03   #33
Rodrigo

Jun 2010
Pennsylvania

3A816 Posts

Quote:
 Originally Posted by firejuggler a P75? under windows?
firejuggler,

Believe it or not -- Windows for Workgroups 3.11 and MS-DOS 6.20.

This was my main work computer from 1995 to 2002. (I do have other, newer machines crunching for OBD and GIMPS already.)

Thank you VERY much for providing this info!

Rodrigo

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