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-   -   Factoring database (https://www.mersenneforum.org/showthread.php?t=11119)

axn 2012-01-31 04:01

[QUOTE=Stargate38;287800]It didn't say anything about DEP. Normally DEP shows a message saying "This program was shut down to protect your system" or something like that.[/QUOTE]

I didn't pull this suggestion out of thin air. I faced similar issue and this fixed it.

What is your DEP setting?

Stargate38 2012-01-31 15:44

My DEP is set to "Turn on DEP for essential Windows Programs and Services only". How would it think NewPGen was an "essential Window Program or Service"?

VolMike 2012-01-31 16:15

One more usefull feature
 
I don't know if someone posted this proposal before me. If so, just delete this post.
I often factorise some small numbers (up to 90 digits or so) from [url]http://www.factordb.com/listtype.php?t=3[/url] in a batch mode.
I usually get all numbers as a plaint text and put them in a batch file. Some times it would be nice to set an [B]upper bound[/B] of number's length to get the exact range of desirable numbers to factor,f.e. from 1 to 90 digits.
It would be quite usefull to get an opportunuty of putting the max value of decimal digits in selected numbers. I hope you understand what I meant.

VolMike.

yoyo 2012-01-31 16:53

[QUOTE=VolMike;287894]I don't know if someone posted this proposal before me. If so, just delete this post.
I often factorise some small numbers (up to 90 digits or so) from [url]http://www.factordb.com/listtype.php?t=3[/url] in a batch mode.
I usually get all numbers as a plaint text and put them in a batch file. Some times it would be nice to set an [B]upper bound[/B] of number's length to get the exact range of desirable numbers to factor,f.e. from 1 to 90 digits.
It would be quite usefull to get an opportunuty of putting the max value of decimal digits in selected numbers. I hope you understand what I meant.

VolMike.[/QUOTE]
Just check in your script the maximal length of the composites you downloaded.
yoyo

VolMike 2012-01-31 17:20

[QUOTE=yoyo;287899]Just check in your script the maximal length of the composites you downloaded.
yoyo[/QUOTE]

Possible,but inconvenient.
VolMike

yoyo 2012-01-31 20:53

You can use my [URL="http://www.rechenkraft.net/wiki/index.php?title=Benutzer_Diskussion:Yoyo/factordb#yafu.pl"]Perl script[/URL] to fetch small composites from factorDB and factor them. You can run it in the background with low priority.
yoyo

gd_barnes 2012-02-01 06:57

When are the scan buttons going to be added back to the DB ? I really miss them for finding smaller factors.

VolMike 2012-02-01 10:55

[QUOTE=yoyo;287929]You can use my [URL="http://www.rechenkraft.net/wiki/index.php?title=Benutzer_Diskussion:Yoyo/factordb#yafu.pl"]Perl script[/URL] to fetch small composites from factorDB and factor them. You can run it in the background with low priority.
yoyo[/QUOTE]
Thx! I'll try your script.

Syd 2012-02-02 00:00

[QUOTE=gd_barnes;287955]When are the scan buttons going to be added back to the DB ? I really miss them for finding smaller factors.[/QUOTE]

First I´ll check if the db runs stable without overloading the server. When this is done the scan buttons will be activated again.

c10ck3r 2012-02-03 21:46

For the programmers: would it be feasible to add a tag to identify composites as a result of aliquot sequences? Thanks!

maxal 2012-02-13 02:22

factordb may return incomplete factorization of a proper factor of a completely factored number.

E.g., for 10^486 - 1 it returns complete factorization (FF status), while for (10^486-1)/487 it returns incomplete factorization (CF status).

Is it a bug or feature?


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