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Search: Posts Made By: chris2be8
Forum: Cunningham Tables 2022-10-06, 16:18
Replies: 32
Views: 2,278
Posted By chris2be8
I've got a fair amount of similar data for GGNFS...

I've got a fair amount of similar data for GGNFS poly selection for various numbers (most from the Brent tables) ranging from 130 to 176 digits.

My scripts usually kept the best 200-300 polys from...
Forum: Software 2022-10-05, 15:41
Replies: 85
Views: 6,776
Posted By chris2be8
That looks like a network glitch truncated the...

That looks like a network glitch truncated the response. So you only received part of the header for the web page but none of the body.

If it worked OK when it retried then don't worry about it.
...
Forum: Information & Answers 2022-10-04, 15:42
Replies: 36
Views: 1,033
Posted By chris2be8
When I ran the same test on my GPU I got: ...

When I ran the same test on my GPU I got:

Input number is 2^1019-1 (307 digits)
Using B1=4, B2=0, sigma=3:92-3:123 (32 curves)
No available CGBN Kernel large enough to process N(1019 bits)...
Forum: FactorDB 2022-10-02, 16:08
Replies: 26
Views: 1,510
Posted By chris2be8
No, a special address set up for my sister. So...

No, a special address set up for my sister. So it's not likely to be in any blacklists. And so far (touch wood) spammers havn't found it either.

He'll probably reply to any reasonably polite...
Forum: Information & Answers 2022-10-02, 15:23
Replies: 36
Views: 1,033
Posted By chris2be8
Post the last few lines from test.cgbnecm.log...

Post the last few lines from test.cgbnecm.log here. If you are not sure how to do that post output from tail test.cgbnecm.log (or post the whole file if it's small).

You will get better responses...
Forum: FactorDB 2022-10-01, 16:01
Replies: 26
Views: 1,510
Posted By chris2be8
He's replied to emails I sent him. The last one...

He's replied to emails I sent him. The last one was yesterday, noting that http://factordb.com/index.php?id=1100000001460173471 showed as PRP even though a certificate had been submitted some time...
Forum: Information & Answers 2022-09-30, 15:36
Replies: 36
Views: 1,033
Posted By chris2be8
Does make test work? If it fails please post...

Does make test work? If it fails please post output here.

Try B1=1e5 and B2=1e6 on that number (small enough they should work on any GPU). Then try larger B1 and B2 until you find the limit.
...
Forum: Factoring 2022-09-28, 16:11
Replies: 30
Views: 869
Posted By chris2be8
Glad I could help. Let me know if you want any...

Glad I could help. Let me know if you want any bits I left out (eg finding out what files to sort on).

I can't test it myself because most of my PCs are shut down for the duration of the energy...
Forum: Factoring 2022-09-27, 16:26
Replies: 30
Views: 869
Posted By chris2be8
I've managed to make msieve polyselect work quite...

I've managed to make msieve polyselect work quite well, but I've not used CADO at all. I hope my notes help.

For non-GPU work I just run several msieve tasks in parallel, each doing the whole job...
Forum: GMP-ECM 2022-09-22, 15:56
Replies: 26
Views: 2,031
Posted By chris2be8
Was it originally found after running several...

Was it originally found after running several curves, then not found running one curve starting with the sigma reported for the curve that found it? That would suggest an uninitialised variable...
Forum: Aliquot Sequences 2022-09-21, 15:57
Replies: 84
Views: 1,706
Posted By chris2be8
If the base and exponent are both prime they may...

If the base and exponent are both prime they may well have been done by the Oddperfect project. And some people find p^q-1 interesting.

If the base is composite then index 1 will have algebraic...
Forum: NFS@Home 2022-09-13, 16:01
Replies: 148
Views: 12,500
Posted By chris2be8
You said to sieve from 25M to 100M, with lims of...

You said to sieve from 25M to 100M, with lims of 134M. Sieving from about 100M to 175M should have got enough relations with a lower duplicate rate. (Of course you would have to have test sieved up...
Forum: FactorDB 2022-09-12, 15:50
Replies: 186
Views: 61,562
Posted By chris2be8
Thanks for the advice. I've installed primo-4.3.3...

Thanks for the advice. I've installed primo-4.3.3 on another system so if I hit another number like that I can try to prove with 4.3.3.
Forum: Astronomy 2022-09-10, 16:33
Replies: 15
Views: 911
Posted By chris2be8
I brought it from WHSmith.

I brought it from WHSmith.
Forum: FactorDB 2022-09-10, 16:26
Replies: 186
Views: 61,562
Posted By chris2be8
The input file is as downloaded from factordb....

The input file is as downloaded from factordb. And I've just checked several other .in files where I was able to build a certificate, they all say N$=
Forum: NFS@Home 2022-09-10, 16:00
Replies: 140
Views: 8,660
Posted By chris2be8
Most of what I know about lambda is from reading...

Most of what I know about lambda is from reading the INSTALL.and.USE (or cweb.INSTALL.and.USE) file shipped with the lattice siever. Read the paragraph after the example poly a few times and it...
Forum: Astronomy 2022-09-09, 16:28
Replies: 15
Views: 911
Posted By chris2be8
Were you inspired by the August issue of...

Were you inspired by the August issue of Astronomy?
Forum: FactorDB 2022-09-09, 16:23
Replies: 186
Views: 61,562
Posted By chris2be8
I tried to build a certificate for...

I tried to build a certificate for (77123620275709493545683810076571903+325!)/145997311544641 with the following .in file:

;This is an input file for PRIMO
;Number expressed to the base 16
;The...
Forum: FactorDB 2022-09-04, 15:52
Replies: 9
Views: 600
Posted By chris2be8
I started having problems at about 21:05 BST...

I started having problems at about 21:05 BST yesterday, it said "You have reached the maximum of 4 parallel processing requests. Please wait a few seconds and try again." for every request until...
Forum: NFS@Home 2022-09-04, 15:38
Replies: 148
Views: 12,500
Posted By chris2be8
What makes it so big? If it's lots of "error -nn...

What makes it so big? If it's lots of "error -nn reading relation nnnn" messages then the following script will summarise them:


#!/usr/bin/perl

# This summarises msieve.log ready to post.
...
Forum: Forum Feedback 2022-09-02, 16:53
Replies: 10
Views: 902
Posted By chris2be8
What time zone are you in? I could connect...

What time zone are you in? I could connect yesterday, about 23 hours before making this post.

Did you try to investigate? I'd start with ping mersenneforum.org and if that worked OK try wget...
Forum: YAFU 2022-08-28, 15:32
Replies: 438
Views: 62,081
Posted By chris2be8
(8^85-2)/6 simplifies to (2^254-1)/3 which...

(8^85-2)/6 simplifies to (2^254-1)/3 which factors to (2^127-1)*(2^127+1)/3.

The problem was probably caused by the fact the expression had algebraic factors.
Forum: Aliquot Sequences 2022-08-26, 16:03
Replies: 653
Views: 100,185
Posted By chris2be8
The cannot open input file 'worktodo.ini' message...

The cannot open input file 'worktodo.ini' message is probably coming from msieve.

Part of the output from msieve -h (on Linux):

-i <name> read one or more integers to factor from
...
Forum: YAFU 2022-08-19, 15:43
Replies: 438
Views: 62,081
Posted By chris2be8
Your best option is probably to call yafu as...

Your best option is probably to call yafu as system("./yafu \"factor($composite)\" -threads $yafuthreads -logfile yafu.log");, then parse yafu.log to find the factors once it has finished. Then...
Forum: YAFU 2022-08-18, 15:42
Replies: 438
Views: 62,081
Posted By chris2be8
From ali.pl.txt: open(YAFU, "./yafu...

From ali.pl.txt:

open(YAFU, "./yafu \"factor($composite)\" -threads $yafuthreads|") or die "Couldn't start yafu!";
while (<YAFU>) {
print "$_";


AFAIK output from yafu get's...
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