New online applet for factorization

[TimSorbet]

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)

[Rodrigo]

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

[firejuggler]

a P75? under windows?
well simple enough
simply create a text file

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.

[ET_]

Originally Posted by firejuggler

a P75? under windows?
well simple enough
simply create a text file

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

[ppo]

ok, now I understand. Thanks a lot.

[Uncwilly]

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.

[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)+1

4294967563 42949675631
4294967983 42949679831
4294972063 42949720631
4294972267 42949722671
4294973791 42949737911
4294980763 42949807631
4294982191 42949821911
4294983811 42949838111
4294996051 42949960511
4294999363 42949993631

[ET_]

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)+1

4294967563 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

[kar_bon]

Here's a small WIN script for running automatically:

script called "runGIMPS.bat":

@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

[Rodrigo]

@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

[Rodrigo]

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