mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.33 seconds.
Search: Posts Made By: VBCurtis
Forum: Information & Answers 2021-09-24, 16:14
Replies: 48
Views: 6,554
Posted By VBCurtis
You're in a math forum, talking about something...

You're in a math forum, talking about something for which actual numerical probabilities are not hard to compute- that is Batalov's homework assignment for you, after all. So, you read the...
Forum: Conjectures 'R Us 2021-09-23, 22:51
Replies: 1,125
Views: 105,170
Posted By VBCurtis
60-61G is at 93k; 61-63G has left 93-95k and...

60-61G is at 93k; 61-63G has left 93-95k and 97-100k.
I believe both will finish around Halloween.
Forum: CADO-NFS 2021-09-23, 18:24
Replies: 67
Views: 12,200
Posted By VBCurtis
I don't think we can answer that until we see the...

I don't think we can answer that until we see the data from 15 vs 12 vs 10. I'm expecting 50-60% duplicates in 12-15, and worse in 10-12.

If you do wish to take more data, I think Q=8-10M would...
Forum: CADO-NFS 2021-09-23, 16:40
Replies: 67
Views: 12,200
Posted By VBCurtis
I'd like to see 10-100M and 10-105M. The CADO...

I'd like to see 10-100M and 10-105M. The CADO group reports that duplicate ratio rises meaningfully when q-max is beyond 8 * q-min. Your data is all within that ratio, but you started sieving at 10M...
Forum: Miscellaneous Math 2021-09-22, 21:21
Replies: 9
Views: 342
Posted By VBCurtis
"good enough" is a matter of your level of...

"good enough" is a matter of your level of patience. The only limitation that machine has other than "time spent to get a result" is that RAM installed limits the maximum size of NFS job you can run....
Forum: Miscellaneous Math 2021-09-21, 03:16
Replies: 9
Views: 342
Posted By VBCurtis
Is your interest Mersennes only, primes of some...

Is your interest Mersennes only, primes of some other forms, or factoring too? Those are the three main categories this forum's users work on.

If you're searching for primes, the best...
Forum: Miscellaneous Math 2021-09-19, 18:05
Replies: 9
Views: 331
Posted By VBCurtis
How is it that you think you are smart enough to...

How is it that you think you are smart enough to come up with a formula that turns out primes very often, but aren't smart enough to actually check if the (majority of) outputs are prime?
Forum: Cunningham Tables 2021-09-19, 16:01
Replies: 75
Views: 30,661
Posted By VBCurtis
Plutie's poly makes the job more than 1 digit...

Plutie's poly makes the job more than 1 digit easier than the previous best. Bravo!
Forum: Riesel Prime Search 2021-09-18, 04:27
Replies: 673
Views: 81,951
Posted By VBCurtis
Seeing as how there have been no reservations in...

Seeing as how there have been no reservations in four years, I think you can have at it.

If you don't mind a little patience, we can ask if anyone wishes to do 6-6.1M before you start- perhaps...
Forum: Msieve 2021-09-17, 19:44
Replies: 60
Sticky: Msieve GPU LA
Views: 2,957
Posted By VBCurtis
I'm gonna hand-wave here, since only a few people...

I'm gonna hand-wave here, since only a few people have bothered taking data:

When a relation set is right at the cusp of building a matrix, a few more hours sieving will save more than a few hours...
Forum: Msieve 2021-09-17, 16:52
Replies: 60
Sticky: Msieve GPU LA
Views: 2,957
Posted By VBCurtis
In principle, yes. There's an electricity...

In principle, yes. There's an electricity savings to be had by over-sieving less and accepting larger matrices, especially on the e-small queue where matrices are nearly all under 15M. However, one...
Forum: Riesel Prime Search 2021-09-17, 05:00
Replies: 673
Views: 81,951
Posted By VBCurtis
5250-5300 complete, no primes. Results file...

5250-5300 complete, no primes.

Results file attached; I'll leave it here for a couple weeks in case anyone wants it, and then I'll delete to save space on the forum.

Should I change the...
Forum: NFS@Home 2021-09-17, 02:15
Replies: 168
Views: 13,489
Posted By VBCurtis
13_2_889m1 has been factored: p68 factor:...

13_2_889m1 has been factored:
p68 factor: 16198615149065734454793567815564974310130633967067455652347061521813
p144 factor:...
Forum: NFS@Home 2021-09-15, 22:04
Replies: 184
Views: 20,343
Posted By VBCurtis
QUEUED AS 13_2_911m1 13*2^911-1 is ready...

QUEUED AS 13_2_911m1

13*2^911-1 is ready for SNFS, after 2T55 of ECM:
n:...
Forum: Riesel Prime Search 2021-09-14, 16:27
Replies: 673
Views: 81,951
Posted By VBCurtis
Still just under 2k left.

Still just under 2k left.
Forum: Cunningham Tables 2021-09-12, 22:05
Replies: 75
Views: 30,661
Posted By VBCurtis
Judging by the records for 200-201-202, a 3.0...

Judging by the records for 200-201-202, a 3.0 should be possible. Like Kruoli, I'll hope for some lucky spin!
Forum: NFS@Home 2021-09-09, 21:06
Replies: 33
Views: 3,710
Posted By VBCurtis
I'd guess 875-900M relations to get a nice...

I'd guess 875-900M relations to get a nice matrix; perhaps 50-330M and try filtering before deciding how many more Q?

Yield of almost-3.0 sounds quite nice!
Forum: Msieve 2021-09-09, 21:00
Replies: 60
Sticky: Msieve GPU LA
Views: 2,957
Posted By VBCurtis
It's a 32/33 hybrid, with a healthy amount of...

It's a 32/33 hybrid, with a healthy amount of oversieving (I wanted a matrix below 30M dimensions, success!).

I'm impressed that fits on your card, and 50hr is pretty amazing- I just started the...
Forum: CADO-NFS 2021-09-07, 14:22
Replies: 67
Views: 12,200
Posted By VBCurtis
More poly select doesn't interfere with anything...

More poly select doesn't interfere with anything else- perhaps 2x more poly select saves you 5% of sieve time; that's around half a digit of difficulty. I have poly select calibrated to take about 5%...
Forum: Aliquot Sequences 2021-09-05, 21:34
Replies: 524
Views: 63,476
Posted By VBCurtis
We would need quite a lot of extra sieving to get...

We would need quite a lot of extra sieving to get a matrix under 32GB in memory footprint; if you have 64, you're going to be fine (possibly with CADO, definitely with msieve).

Barring any new...
Forum: Aliquot Sequences 2021-09-04, 04:52
Replies: 524
Views: 63,476
Posted By VBCurtis
This is good enough to sieve with. Between...

This is good enough to sieve with.

Between this and the Cunningham 3,748+ C204, one should go to f-small and the other should be a team sieve. Which should be which? My vote is to team-sieve...
Forum: NFS@Home 2021-09-04, 01:16
Replies: 1,849
Views: 156,679
Posted By VBCurtis
Well, I hope nobody tries to test-sieve with the...

Well, I hope nobody tries to test-sieve with the params provided with the poly! lim's above 2^30, but 32bit large primes?

GNFS-208 is not too hard for f-small; lim's of 225M are a bit restrictive...
Forum: NFS@Home 2021-09-02, 22:24
Replies: 184
Views: 20,343
Posted By VBCurtis
QUEUED AS 13_2_909m1 13*2^909-1 is ready for...

QUEUED AS 13_2_909m1

13*2^909-1 is ready for SNFS on 15e:
n:...
Forum: CADO-NFS 2021-09-02, 21:28
Replies: 67
Views: 12,200
Posted By VBCurtis
I leave all CADO processes the default...

I leave all CADO processes the default two-threaded unless I run low on memory. But number of threads per process is separate from number of total threads used- CADO defaults to the total number of...
Forum: Aliquot Sequences 2021-09-02, 15:51
Replies: 524
Views: 63,476
Posted By VBCurtis
I use 0.05 for C140-C160 to reduce matrix time...

I use 0.05 for C140-C160 to reduce matrix time when running all jobs on a single machine; I think EdH (who sieves on a "farm" of a dozen or more smaller machines) uses 0.08 or 0.10. The number is a...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 17:56.


Fri Sep 24 17:56:47 UTC 2021 up 63 days, 12:25, 2 users, load averages: 2.22, 2.21, 1.95

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.