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Forum: Factoring 2022-01-25, 02:11
Replies: 81
Views: 84,803
Posted By jyb
Here's a statically-linked fat binary of ecm for...

Here's a statically-linked fat binary of ecm for Macs. It should work on x86_64 and arm64.
Forum: Factoring 2022-01-18, 17:59
Replies: 1,842
Views: 194,169
Posted By jyb
There's another even-lower-hanging piece of fruit...

There's another even-lower-hanging piece of fruit available now. Yoyo@home just found a 56-digit factor of 5+2,850L, leaving a 141-digit composite cofactor. Anybody interested in a relatively easy...
Forum: NFS@Home 2022-01-14, 15:17
Replies: 1,898
Views: 168,194
Posted By jyb
n:...

n:...
Forum: NFS@Home 2022-01-12, 16:41
Replies: 11
Views: 565
Posted By jyb
Not really. With the amount of ECM this number...

Not really. With the amount of ECM this number had (which was reasonable for its NFS difficulty), the probability of finding this factor was only about 42%. More generally, I'd say it only...
Forum: Factoring 2022-01-10, 05:14
Replies: 1,842
Views: 194,169
Posted By jyb
Update

Time for another update! The tables and ECMnet server have been updated to reflect all factors reported to me through the end of January 9 (GMT). There were 29 new factors found since the last...
Forum: Factoring 2022-01-08, 00:46
Replies: 1,842
Views: 194,169
Posted By jyb
Would anybody like to claim credit for a 54-digit...

Would anybody like to claim credit for a 54-digit prime factor of 5-2,391? It was added to FactorDB at around midday UTC on Jan 7.

The composite cofactor has 161 digits, making it the easiest NFS...
Forum: NFS@Home 2021-12-30, 17:08
Replies: 1,898
Views: 168,194
Posted By jyb
Yeah, I figured that was it, but it has...

Yeah, I figured that was it, but it has interesting implications for the other queues, which we've been trying to fill up in anticipation. If the challenge passes them by, then there will be quite a...
Forum: NFS@Home 2021-12-30, 16:23
Replies: 1,898
Views: 168,194
Posted By jyb
Interestingly it would appear that bunkering is...

Interestingly it would appear that bunkering is only being done for the 16eV5 queue, at least so far. None of the other queues appears to be affected.
Forum: NFS@Home 2021-12-29, 21:47
Replies: 1,898
Views: 168,194
Posted By jyb
This might be interesting to look at as an octic....

This might be interesting to look at as an octic. We're getting closer to the point where quartics and octics are equally painful, and it would be interesting to know how this one fares. BTW, note...
Forum: NFS@Home 2021-12-18, 18:12
Replies: 131
Views: 13,046
Posted By jyb
Ah, I guess my information was well out of date. ...

Ah, I guess my information was well out of date. Thanks for the correction.
Forum: NFS@Home 2021-12-18, 05:54
Replies: 131
Views: 13,046
Posted By jyb
My understanding is that it's more like this: ...

My understanding is that it's more like this:

lasieve4 has 14e, 15e, and 16e.
lasieve5 has 16e.

I believe the characteristics are as you describe them (e.g. with regard to sieving below the...
Forum: Lounge 2021-10-19, 02:51
Replies: 1,151
Views: 105,350
Posted By jyb
Can you substantiate this? What form do these...

Can you substantiate this? What form do these subsidies take?[/QUOTE]



So far your posted links amount to:

1) Government contracts that SpaceX has won.

2) Government support for...
Forum: Lounge 2021-10-18, 04:34
Replies: 1,151
Views: 105,350
Posted By jyb
Can you substantiate this? What form do these...

Can you substantiate this? What form do these subsidies take?
Forum: NFS@Home 2021-10-07, 20:50
Replies: 131
Views: 13,046
Posted By jyb
You may want to run the skew value through...

You may want to run the skew value through cownoise, since it apparently comes up with values different from the standard guideline (which would have given 1.000 for the original poly as well).
Forum: NFS@Home 2021-10-07, 17:20
Replies: 131
Views: 13,046
Posted By jyb
n:...

n:...
Forum: NFS@Home 2021-10-07, 16:58
Replies: 131
Views: 13,046
Posted By jyb
C199_M31_k35

With all of the discussion about this difficult quartic and how best to sieve it, there's something I'm missing: why aren't we using the obvious sextic, which has a very reasonable difficulty of 280,...
Forum: Factoring 2021-10-05, 18:22
Replies: 1,842
Views: 194,169
Posted By jyb
Missed report

Whoops! Looks like I completely failed to notice RichD's factor report for 9-5,271, way back on Sept 12 (https://mersenneforum.org/showthread.php?p=587762#post587762). It should have been in the...
Forum: Factoring 2021-09-16, 04:54
Replies: 1,842
Views: 194,169
Posted By jyb
Update

I have updated the tables and ECMnet server to reflect all factors reported to me through the end of September 15 (GMT). There were 28 new factors found since the last update, of which 25 completed...
Forum: NFS@Home 2021-09-03, 16:53
Replies: 1,898
Views: 168,194
Posted By jyb
Keep in mind that the sprint only goes for 3...

Keep in mind that the sprint only goes for 3 days, and the first day is more than half over. The equilibrium you mentioned appears to have settled in on somewhere around 30,000 wu's per day per...
Forum: NFS@Home 2021-09-03, 14:09
Replies: 1,898
Views: 168,194
Posted By jyb
No need to be sorry. It wasn't a criticism;...

No need to be sorry. It wasn't a criticism; you're under no obligations here. I just found myself missing your customary warnings and suggestions. :smile:
Forum: NFS@Home 2021-09-03, 03:41
Replies: 1,898
Views: 168,194
Posted By jyb
Yes, IMO. There's no compelling reason to keep...

Yes, IMO. There's no compelling reason to keep them out. I think Serge's point was that there wasn't sufficient reason to do them in preference to other work. But in the absence of said other...
Forum: NFS@Home 2021-09-02, 23:51
Replies: 1,898
Views: 168,194
Posted By jyb
Yes, looks like you're right. Hmm, usually...

Yes, looks like you're right. Hmm, usually Carlos warns us when one of these things is coming. :grin: Sounds like we should move the queued jobs in 15f-small to the sieving state as soon as...
Forum: NFS@Home 2021-09-02, 22:53
Replies: 1,898
Views: 168,194
Posted By jyb
Not sure if there's one of these challenges going...

Not sure if there's one of these challenges going on right now or something, but somebody has grabbed a whole lot of work units from all of the queues. The number of outstanding work units is about...
Forum: NFS@Home 2021-08-24, 15:46
Replies: 275
Views: 23,525
Posted By jyb
10m3_257 factored

p107 factor: 12903223717239310701599417516919708176943342363241303565526878670887031182547617953116289247055152318787487
p134 factor:...
Forum: NFS@Home 2021-08-20, 14:55
Replies: 275
Views: 23,525
Posted By jyb
Taking 10m3_257.

Taking 10m3_257.
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