mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.53 seconds.
Search: Posts Made By: VBCurtis
Forum: Miscellaneous Math 2020-10-22, 05:21
Replies: 3
Views: 25
Posted By VBCurtis
This is the slowest form of trial factoring...

This is the slowest form of trial factoring available. You have exhibited zero knowledge of the structure of mersenne factors.

You've never seen "2kp+1"? You could start there.

EDIT: Wait,...
Forum: Aliquot Sequences 2020-10-22, 05:15
Replies: 414
Views: 29,761
Posted By VBCurtis
I did 800@6e7 and 650 @ 8e7. We're at about...

I did 800@6e7 and 650 @ 8e7. We're at about 1.5t50 combined.

T60 is about right for total effort here? I am moving to 15e7 curves presently. About 10,000 of those gets us T55 from here. I have...
Forum: Factoring 2020-10-22, 05:05
Replies: 51
Views: 1,885
Posted By VBCurtis
Wait for what? We haven't done nearly enough...

Wait for what?

We haven't done nearly enough ECM to justify the time SNFS would take. You can wait for others to do the ECM, or you can contribute if you wish. I've done both, myself- I ran a...
Forum: Aliquot Sequences 2020-10-21, 23:15
Replies: 414
Views: 29,761
Posted By VBCurtis
i2224:C196 continues. 1300@2e7 complete, just...

i2224:C196 continues.
1300@2e7 complete, just over half a t45. Moving up to 6e7 and 8e7 curves; I'll get half a t50 done, and then jump to 15e7.
Forum: EdH 2020-10-21, 22:57
Replies: 9
Views: 70
Posted By VBCurtis
20.04 has a working (or possible-to-make-work)...

20.04 has a working (or possible-to-make-work) open-mpi. 16.04 and 18.04 do not.
Forum: Aliquot Sequences 2020-10-21, 21:11
Replies: 414
Views: 29,761
Posted By VBCurtis
C142 now finished. Now C196 on i2224. t40...

C142 now finished. Now C196 on i2224.
t40 complete, t45 will be done in ~4 hrs.
Y'all are invited for t50 or larger curves!
Forum: Msieve 2020-10-21, 20:54
Replies: 3
Views: 59
Posted By VBCurtis
If the large-prime bound jumped up 1 from your...

If the large-prime bound jumped up 1 from your previous jobs, you'll need about 70% more relations than you did for the previous jobs, but not all that much more overall wall-clock time; more...
Forum: Factoring 2020-10-21, 20:47
Replies: 51
Views: 1,885
Posted By VBCurtis
It's ECM; that number is always fuzzy. When a...

It's ECM; that number is always fuzzy. When a T-level has been completed, there is a 1/e chance of missing a factor of that size (if one exists).

So, when T65 is done, a 65-digit factor is missed...
Forum: Conjectures 'R Us 2020-10-21, 20:40
Replies: 1,049
Views: 68,485
Posted By VBCurtis
I've personally tried to sieve and send-to-BOINC...

I've personally tried to sieve and send-to-BOINC a variety of exponent ranges, such that whatever one's interest for prime size there would be R3 work available.

Folks can individually test...
Forum: Lounge 2020-10-21, 20:31
Replies: 17
Views: 393
Posted By VBCurtis
We appreciate your view and concern, but do what...

We appreciate your view and concern, but do what interests you most about the project. If you employ your GPU to make factoring progress, that helps the project quite a bit.

We test each...
Forum: Factoring 2020-10-21, 20:27
Replies: 51
Views: 1,885
Posted By VBCurtis
It really doesn't matter how long it takes any...

It really doesn't matter how long it takes any program to get to 68 or 69 bits, when ECM has ruled out factors below ~67-68 DIGITS.

LaurV is just trolling.
Forum: Conjectures 'R Us 2020-10-21, 15:35
Replies: 1,049
Views: 68,485
Posted By VBCurtis
After all this effort to reach the top-5000...

After all this effort to reach the top-5000 region, stop right on the edge of it? Naw... The k<2G sieve file goes up to 3M, and I'll keep sending blocks to Reb and BOINC as appropriate by sieve...
Forum: NFS@Home 2020-10-21, 06:50
Replies: 28
Views: 1,361
Posted By VBCurtis
QUEUED AS 5_2_791m1 5*2^791-1 is ready for...

QUEUED AS 5_2_791m1

5*2^791-1 is ready for e-small:
n: 11181286778075434656041528999956536722545430359473458156222713275373040350118089747209$
type: snfs
skew: 0.87
deg: 6
c6: 5
c0: -2
Y1:...
Forum: NFS@Home 2020-10-21, 04:55
Replies: 28
Views: 1,361
Posted By VBCurtis
QUEUED AS 5_2_784m1 5*2^784-1 is ready for...

QUEUED AS 5_2_784m1

5*2^784-1 is ready for e_small:
n: ...
Forum: Conjectures 'R Us 2020-10-21, 02:24
Replies: 5
Views: 2,710
Posted By VBCurtis
Thanks for your reply. I don't have a checkpoint...

Thanks for your reply. I don't have a checkpoint file; seems my srbsieve is from 2015, so I updated it to the most recent 2017 1.04 version KEP linked last week for me.

I'll finish the...
Forum: Conjectures 'R Us 2020-10-20, 22:06
Replies: 5
Views: 2,710
Posted By VBCurtis
How do I resume a partly-completed srbsieve run? ...

How do I resume a partly-completed srbsieve run?
Specifically, I'm a few pfgw tests into the last chunk of a phase, so I need to resume pfgw.
It's the second-to-last phase, and I don't mind...
Forum: Aliquot Sequences 2020-10-20, 21:50
Replies: 414
Views: 29,761
Posted By VBCurtis
C141 done. Now C183 on index 2222. I've done...

C141 done.
Now C183 on index 2222. I've done about a T40, with 2000@2e7 (roughly a T45) scheduled for the next few hours.
T50 or larger curves welcome. If you crack it, you are welcome to try the...
Forum: NFS@Home 2020-10-20, 21:32
Replies: 76
Views: 8,706
Posted By VBCurtis
Factors for 3366_2218 C197

Aliquot 3366 index 2218 has been factored:
p79 factor: 2239206969768754413938687236097249472974959967230142543097186443692246701279791
p119 factor:...
Forum: Data 2020-10-20, 18:58
Replies: 183
Views: 23,924
Posted By VBCurtis
I've started ECM on the suggested range. My...

I've started ECM on the suggested range. My first set is 5 curves at B1=250K; I may adjust that later. A curve at this size on the Surface tablet I'm using takes about 25k seconds, so ought to...
Forum: Aliquot Sequences 2020-10-20, 06:59
Replies: 414
Views: 29,761
Posted By VBCurtis
C135 done. Now i2221 at C141, which will take me...

C135 done. Now i2221 at C141, which will take me a bit about 18 hrs to GNFS.
Forum: Factoring 2020-10-19, 22:55
Replies: 51
Views: 1,885
Posted By VBCurtis
The topic of the thread as suggested in the first...

The topic of the thread as suggested in the first post is so utterly hopeless that the rest of the discussion is the only useful content. OP's idea was debunked by multiple people, who gave data and...
Forum: Aliquot Sequences 2020-10-19, 21:01
Replies: 414
Views: 29,761
Posted By VBCurtis
Index 2218 C197 has been cracked and sent to DB. ...

Index 2218 C197 has been cracked and sent to DB. Matrix was just over 41M in size, so it took a while.

Now at 2220, a C135 that I've fed to CADO. I'll have factors in about 9 hours, just before...
Forum: NFS@Home 2020-10-19, 17:04
Replies: 28
Views: 1,361
Posted By VBCurtis
It won't. I have a few jobs lined up, for one-...

It won't. I have a few jobs lined up, for one- but the queue has been pretty long the last couple weeks, so I haven't submitted. If it does get close to dry, we'll just post one of the smaller...
Forum: Factoring 2020-10-19, 17:02
Replies: 51
Views: 1,885
Posted By VBCurtis
Hardly any of us use ECM with solely screen...

Hardly any of us use ECM with solely screen output. In windows or linux, put > outputfile.txt at the end of your ECM invocation. It's rather challenging to keep records of ECM levels without logs,...
Forum: Lone Mersenne Hunters 2020-10-19, 16:55
Replies: 13
Views: 2,480
Posted By VBCurtis
Consider how many bits is equivalent to 25...

Consider how many bits is equivalent to 25 digits. If you TF to, say, 75 or 76, you've already done 80% or so of a t25. Any ECM should be done with B1 larger than 50k after TF to 75+.

Curves at...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 06:20.

Thu Oct 22 06:20:24 UTC 2020 up 42 days, 3:31, 0 users, load averages: 1.48, 1.31, 1.22

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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.