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Search: Posts Made By: SethTro
Forum: mersenne.ca 2022-06-08, 21:43
Replies: 928
Sticky: mersenne.ca
Views: 124,516
Posted By SethTro
I don't know where George pulled the bounds from...

I don't know where George pulled the bounds from but they used 2.4e9, 7.2e9, and 21.6e9 and the counts are from the relevant columns: 350860, 567615, 930668.

Thanks for the updated data! I...
Forum: mersenne.ca 2022-06-08, 21:33
Replies: 928
Sticky: mersenne.ca
Views: 124,516
Posted By SethTro
https://gitlab.inria.fr/zimmerma/ecm/-/blob/master...

https://gitlab.inria.fr/zimmerma/ecm/-/blob/master/ecm.c#L853-880

Also if you build from source you can use `timeout 0.1 ecm -v` as the curves are now printed before any work is done.

There's...
Forum: mersenne.ca 2022-06-07, 00:47
Replies: 928
Sticky: mersenne.ca
Views: 124,516
Posted By SethTro
Because of a couple of discussion of M1277...

Because of a couple of discussion of M1277 kriesel asked if I could update the data I provided you in #660 (https://www.mersenneforum.org/showpost.php?p=584341&postcount=660). Let me know if there's...
Forum: Factoring 2022-06-07, 00:37
Replies: 61
Views: 4,354
Posted By SethTro
We already did the math in another post:...

We already did the math in another post: https://www.mersenneforum.org/showthread.php?t=23280 starting around #60

Re-running my numbers I get a slightly different result (using Dickman's function...
Forum: GMP-ECM 2022-05-24, 17:52
Replies: 521
Views: 149,978
Posted By SethTro
If you are willing to compile gmp-ecm from source...

If you are willing to compile gmp-ecm from source you can test larger input numbers (it's also faster).

See https://www.mersenneforum.org/showthread.php?t=27103
Forum: Factoring 2022-05-11, 08:05
Replies: 430
Views: 86,462
Posted By SethTro
Circa 2020 HP 1455 terminated at step 87:...

Circa 2020 HP 1455 terminated at step 87: http://factordb.com/sequences.php?se=10&aq=1455&action=last20&fr=0&to=100

Circa 2021 HP 3721 terminated at step 205:...
Forum: Prime Gap Searches 2022-04-28, 07:13
Replies: 112
Views: 33,654
Posted By SethTro
primecert v2

Michiel had some excellent suggestions about updating the "primecert" column to more than

"C" - certified
"P" - probabilistic
"?" - unverified

In short they suggest adding, P (proven), D...
Forum: Prime Gap Searches 2022-04-13, 06:30
Replies: 112
Views: 33,654
Posted By SethTro
I committed some old code I had worked on verify...

I committed some old code I had worked on verify (using ecpp-dj and sage's ecpp) the endpoints of small gaps.
This is a dual verification that it's easy to run on the small gaps.

I don't have a...
Forum: Prime Gap Searches 2022-04-11, 16:51
Replies: 112
Views: 33,654
Posted By SethTro
I believe this happens when the server (AKA: my...

I believe this happens when the server (AKA: my computer) doesn't fully verify the gap.

There's some discussion in Prime Gap News (see #126...
Forum: Lone Mersenne Hunters 2022-04-11, 05:05
Replies: 2,162
Views: 326,040
Posted By SethTro
Found two factors for a TWOK candidate. one...

Found two factors for a TWOK candidate. one factor in stage one, one factor in stage two.
Both were missed by a 2003 P-1; both could be found with small B1, B2 so the large B2 from 30.8 was a little...
Forum: Data 2022-04-07, 20:18
Replies: 1,401
Views: 184,790
Posted By SethTro
Big plus one from me. I'm on 19.4M with ETA...

Big plus one from me.

I'm on 19.4M with ETA 5 days, so I think 15.2M will probably probably be the last range
Forum: Factoring 2022-04-03, 06:22
Replies: 143
Views: 15,959
Posted By SethTro
This is expected. I'm balancing binary size and...

This is expected. I'm balancing binary size and compile time vs range of numbers that can be tested.

If you want to run ECM on numbers > 1020 bits look around line 670 in cgbn_stage1.cu
Forum: Lone Mersenne Hunters 2022-03-26, 05:11
Replies: 2,162
Views: 326,040
Posted By SethTro
M19414627 has a factor:...

M19414627 has a factor: 259213687242140687678761255384193 (107.676 bits)

My largest factor in the last few months and it was found in stage 1 with B1=800,000!
Forum: mersenne.ca 2022-03-25, 19:33
Replies: 928
Sticky: mersenne.ca
Views: 124,516
Posted By SethTro
11 minutes from post to fix. James provides...

11 minutes from post to fix. James provides better support than any services I've ever used :)
Forum: mersenne.ca 2022-03-25, 19:20
Replies: 928
Sticky: mersenne.ca
Views: 124,516
Posted By SethTro
For just this one exponents the "Estimated...

For just this one exponents the "Estimated T-Level:" is missing. https://www.mersenne.ca/exponent/1000619
Forum: Software 2022-03-22, 03:03
Replies: 613
Views: 50,065
Posted By SethTro
Ryzen 3 3900X, 48GB ram, 1 worker 8 cores, Ubuntu...

Ryzen 3 3900X, 48GB ram, 1 worker 8 cores, Ubuntu 20.04 mprime 30.8b11
Ryzen 3 3900X, 48GB ram, 1 worker 4 cores, Ubuntu 20.04 mprime 30.8b11


[Work thread Mar 21 15:46] P-1 on M19409329 with...
Forum: Data 2022-03-21, 21:21
Replies: 1,401
Views: 184,790
Posted By SethTro
I'm working on 19.4 But I'm a little worried. ...

I'm working on 19.4 But I'm a little worried.

I've completed 175 P-1 at B1=800K B2=780M which is roughly a 7.2% chance of factor (https://www.mersenne.ca/exponent/19400573). Accounting for the...
Forum: Factoring 2022-03-17, 08:55
Replies: 143
Views: 15,959
Posted By SethTro
Fun fact if you follow the advice about custom...

Fun fact if you follow the advice about custom kernel size you can potentially make this an additional 40% faster


$ echo...
Forum: GMP-ECM 2022-03-17, 08:42
Replies: 521
Views: 149,978
Posted By SethTro
I'm happy to look at this as a bug. I vaguely...

I'm happy to look at this as a bug. I vaguely remember that I wasn't sure if I should always stop or only if the cofactor is composite.
Forum: Factoring 2022-03-08, 20:46
Replies: 143
Views: 15,959
Posted By SethTro
TL;DR If you are still running B2 you should...

TL;DR If you are still running B2 you should probably set B1 for each t-level based on this chart (https://members.loria.fr/PZimmermann/records/ecm/params.html) then round number of curves to the...
Forum: Factoring 2022-03-08, 06:53
Replies: 143
Views: 15,959
Posted By SethTro
This isn't documented anywhere, but if we talk...

This isn't documented anywhere, but if we talk through some good notes here I'll happily write them up and include them after the program runs. This is doing the same thing you are with runecmCGBN,...
Forum: Factoring 2022-03-07, 22:43
Replies: 143
Views: 15,959
Posted By SethTro
You can run `./gpu_throughput_test.sh` from the...

You can run `./gpu_throughput_test.sh` from the gmp-ecm folder and it should test with many different multiples of the default (1/4x, 1/2x, 1x, 2x, 4x, 8x). If the default 1x curves is bad It takes...
Forum: GMP-ECM 2022-03-07, 18:01
Replies: 521
Views: 149,978
Posted By SethTro
There's also some code under multiecm.c...

There's also some code under multiecm.c (https://gitlab.inria.fr/zimmerma/ecm/-/blob/master/multiecm.c) in gmp-ecm. I've never used it (I prefer Wraith's ecm.py), the header is


/* multiecm.c -...
Forum: Factoring 2022-03-06, 23:51
Replies: 143
Views: 15,959
Posted By SethTro
IFAIK you don't need to compile CGBN (or setup...

IFAIK you don't need to compile CGBN (or setup the googletest), you just need the folder downloaded ("cloned") from Github.
Forum: Factoring 2022-03-06, 19:26
Replies: 143
Views: 15,959
Posted By SethTro
"Getting" CGBN should be `git clone...

"Getting" CGBN should be `git clone https://github.com/NVlabs/CGBN.git` which will create a new directory "CGBN" then the commands chris2be8 wrote (thanks) should work.

I got access to contribute...
Showing results 1 to 25 of 437

 
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