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Forum: NFS@Home 2020-10-21, 06:50
Replies: 28
Views: 1,346
Posted By VBCurtis
5*2^791-1 is ready for e-small: n:...

5*2^791-1 is ready for e-small:
n: 11181286778075434656041528999956536722545430359473458156222713275373040350118089747209$
type: snfs
skew: 0.87
deg: 6
c6: 5
c0: -2
Y1: -1
Y0:...
Forum: NFS@Home 2020-10-21, 04:55
Replies: 28
Views: 1,346
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: 2,693
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: 2,693
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: 409
Views: 29,645
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: 75
Views: 8,673
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: 23,887
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: 409
Views: 29,645
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: 41
Views: 1,703
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: 409
Views: 29,645
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: 1,346
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: 41
Views: 1,703
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: 2,449
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...
Forum: Factoring 2020-10-19, 02:36
Replies: 5
Views: 154
Posted By VBCurtis
Well, standard practice for 2LP side is to use...

Well, standard practice for 2LP side is to use mfb of 2* lpb, or 2 * lpb-1. We're the weird ones using very non-standard settings for our params files. Take a look at the factory params files for,...
Forum: Factoring 2020-10-18, 23:56
Replies: 5
Views: 154
Posted By VBCurtis
I've wondered about this also, though my...

I've wondered about this also, though my curiosity was about cofactors slightly bigger than 2*mfb but still too small to possibly split into 3 large primes.
Forum: Factoring 2020-10-18, 20:29
Replies: 41
Views: 1,703
Posted By VBCurtis
I don't follow what you're saying. How would he...

I don't follow what you're saying. How would he have missed something?
-one is a flag that asks GMP-ECM to stop when any factor is found. What does setting that have to do with missing a factor?
Forum: Math 2020-10-17, 21:11
Replies: 14
Views: 407
Posted By VBCurtis
I appreciate your work to list these, and I think...

I appreciate your work to list these, and I think I'll have a go at some ECM on M117239 'cause this is fun.
Forum: Math 2020-10-17, 17:26
Replies: 14
Views: 407
Posted By VBCurtis
Is 2^1277+1 a semiprime? You don't need the...

Is 2^1277+1 a semiprime? You don't need the status of both -1 and +1 forms- if one side is ruled out, the other side doesn't matter.
Forum: Data 2020-10-16, 18:41
Replies: 183
Views: 23,887
Posted By VBCurtis
Thanks to a whole bunch of P-1 factors, 4.0M is...

Thanks to a whole bunch of P-1 factors, 4.0M is now complete (1998 remaining).

Might masser like some P-1 or ECM assistance at 14.0M? I have a 4GB-ram laptop I'm using for this effort, so it...
Forum: Aliquot Sequences 2020-10-15, 22:54
Replies: 634
Views: 29,818
Posted By VBCurtis
The odd powers of 13 are finished up to 13^145. ...

The odd powers of 13 are finished up to 13^145.
I am now back to working on the even powers of 13 up to 78.

I added 700+ terms to 13^58.
Forum: Lounge 2020-10-15, 17:05
Replies: 19
Views: 419
Posted By VBCurtis
You're asking how to send spam that doesn't get...

You're asking how to send spam that doesn't get picked up by spam filters... that's gonna be difficult. If the incident was very recent, apps like Nextdoor might turn up a helpful soul in the area....
Forum: Conjectures 'R Us 2020-10-15, 16:56
Replies: 2,178
Views: 147,271
Posted By VBCurtis
I chose to do 7 NewPGen files for the entire...

I chose to do 7 NewPGen files for the entire k-range. The 7th file took ~24hr; in light of Gary's warning that this effort would take multiple CPU-years, I figured one day of pretesting wouldn't...
Forum: Conjectures 'R Us 2020-10-15, 08:38
Replies: 2,178
Views: 147,271
Posted By VBCurtis
I really appreciate the detailed explanation! ...

I really appreciate the detailed explanation! Thank you.

I was planning on enrolling a second laptop core to finish to 2500 sooner than 90 days, and was expecting 4-6 desktop cores of over double...
Forum: Conjectures 'R Us 2020-10-15, 07:56
Replies: 2,178
Views: 147,271
Posted By VBCurtis
I completed k's from 1 to 1M to n=2500 in 100...

I completed k's from 1 to 1M to n=2500 in 100 thread-hours on an old laptop, so I'm comfortable I have the patience to get R400 to 10k. I'll run srbsieve on the laptop in blocks of a few milllion...
Forum: Lounge 2020-10-14, 17:16
Replies: 53
Views: 1,596
Posted By VBCurtis
Solids expand when they heat, and shrink when...

Solids expand when they heat, and shrink when they cool. By "resting" your machine every day after some hours of computation, you are expressly avoiding a steady-state existence and forcing cycles...
Showing results 1 to 25 of 1000

 
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