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Search: Posts Made By: chris2be8
Forum: NFS@Home 2022-12-05, 16:58
Replies: 170
Views: 12,059
Posted By chris2be8
I did a job sieved on both sides on 14e, I found...

I did a job sieved on both sides on 14e, I found I had to sieve about 50% more special-Qs in total than sieving on one side would have needed. Which confirmed that sieving on both sides was not...
Forum: Soap Box 2022-12-03, 16:58
Replies: 9
Views: 339
Posted By chris2be8
A more practical way would be to pick places such...

A more practical way would be to pick places such as the Qatarra Depression in Egypt that are below sea level, so all you need to do is dig a canal or tunnel from the sea to fill them with water....
Forum: Homework Help 2022-11-28, 16:20
Replies: 26
Views: 2,848
Posted By chris2be8
http://factordb.com/listtype.php?t=4&mindig=65&per...

http://factordb.com/listtype.php?t=4&mindig=65&perpage=100&start=0
Forum: YAFU 2022-11-27, 16:24
Replies: 90
Views: 3,721
Posted By chris2be8
Yes. Try it.

Yes. Try it.
Forum: YAFU 2022-11-26, 16:38
Replies: 90
Views: 3,721
Posted By chris2be8
The first one to get to know is man (short for...

The first one to get to know is man (short for manual). Whenever someone mentions a command you are not familiar with read the man page for it to see what it can do (man has a man page, enter man man...
Forum: Msieve 2022-11-20, 16:41
Replies: 6
Views: 481
Posted By chris2be8
According to factordb it's...

According to factordb it's (2^1274-958)/548587400055100020569633729957403536012167283572060233678280830124443453419873609038059209411506178791106026467603646596378.

But SNFS is probably slower...
Forum: FactorDB 2022-11-13, 16:51
Replies: 214
Views: 65,226
Posted By chris2be8
The better representation might have fixed the...

The better representation might have fixed the problem if there was a base between 2 and 255 that hadn't been checked. Telling factordb to check an new base *after* fixing the representation might...
Forum: FactorDB 2022-11-12, 16:51
Replies: 214
Views: 65,226
Posted By chris2be8
I've seen some numbers fastordb showed as PRP,...

I've seen some numbers fastordb showed as PRP, with ## in the expression, that turned out to be composite when I tried to prove them. In most cases telling factordb to do a "Probable prime" test with...
Forum: FactorDB 2022-11-09, 16:52
Replies: 214
Views: 65,226
Posted By chris2be8
I use: curl -F cert=@`ls primo-*.out`...

I use:

curl -F cert=@`ls primo-*.out` http://factordb.com/uploadcert.php
if (($?>0)) ;then exit;fi
mv primo_*.in primo-*.wr primo-*.out done


This submits the certificate as soon as it's...
Forum: YAFU 2022-11-09, 16:38
Replies: 82
Views: 7,710
Posted By chris2be8
Why does c103-2.job.T1 contain: My...

Why does c103-2.job.T1 contain:


My version of factMsieve.pl contains (shortly after "sub makeJobFile"):

print OUTF "m: $M\n" if ($M);


The original version contains:
Forum: FactorDB 2022-11-05, 16:38
Replies: 37
Views: 3,641
Posted By chris2be8
I was doing that, but I've had to shut down due...

I was doing that, but I've had to shut down due to risk of power cuts over winter. Blame Putin for that.

If you want them proved then prove them yourself.
Forum: FactorDB 2022-10-29, 15:57
Replies: 214
Views: 65,226
Posted By chris2be8
Shutting down for Winter

I've shut down my script to prove smallish PRPs prime due to the threat of power outages over winter. I hope to continue in spring when power supplies are safe.

I've generated and submitted a...
Forum: Factoring 2022-10-24, 15:36
Replies: 22
Views: 2,081
Posted By chris2be8
What does that do that echo 'factor($n,10^5)' |...

What does that do that echo 'factor($n,10^5)' | gp -fq doesn't? (That's assuming the number to factor is in $n and will find factors up to 10^5, though factor will work fast enough up to 10^7 before...
Forum: Marin's Mersenne-aries 2022-10-14, 15:57
Replies: 47
Views: 6,313
Posted By chris2be8
It's LSBs are masked in the PRP section, but not...

It's LSBs are masked in the PRP section, but not in the History section (where they match Kriesel's DC). Which looks like a server glitch.
Forum: YAFU 2022-10-07, 15:40
Replies: 82
Views: 7,710
Posted By chris2be8
How do I tell if a CPU supports this? I have...

How do I tell if a CPU supports this? I have several where /proc/cpuinfo says "avx" in flags and two where it also says "avx2". Would they support it? And If not would I get any benefit from your...
Forum: Cunningham Tables 2022-10-06, 16:18
Replies: 42
Views: 4,436
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: 97
Views: 10,371
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: 2,638
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: 49
Views: 5,172
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: 2,638
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: 49
Views: 5,172
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: 2,638
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: 39
Views: 3,003
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: 39
Views: 3,003
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: 29
Views: 3,985
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...
Showing results 1 to 25 of 1000

 
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