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Forum: Aliquot Sequences 2020-11-25, 18:43
Replies: 98
Views: 16,729
Posted By VBCurtis
Starting poly select on this C213, using CADO and...

Starting poly select on this C213, using CADO and degree 6.
Forum: Miscellaneous Math 2020-11-25, 17:16
Replies: 10
Views: 131
Posted By VBCurtis
What is easy and what is hard depends on the form...

What is easy and what is hard depends on the form of the number you wish to test. Numbers of no special form are hopeless to prove prime larger than about 100,000 decimal digits, while numbers with...
Forum: Puzzles 2020-11-25, 17:11
Replies: 10
Views: 91
Posted By VBCurtis
In the spirit of the original formula, solutions...

In the spirit of the original formula, solutions should use both 13 and 666.
Forum: NFS@Home 2020-11-24, 19:48
Replies: 88
Views: 3,950
Posted By VBCurtis
Definitely. I think I'll do a little 10kQ...

Definitely.
I think I'll do a little 10kQ test-sieve to see how much CPU time the extra sieving takes, to compare to matrix time saved.

The new queues and new organization rules are working...
Forum: Lounge 2020-11-24, 19:20
Replies: 4,136
Views: 263,903
Posted By VBCurtis
Frank Zappa's song "Valley Girl" is worth a...

Frank Zappa's song "Valley Girl" is worth a listen as a caricature of this use of language. I moved to the LA area in 1987, and there were definitely girls at my high school who intentionally spoke...
Forum: NFS@Home 2020-11-24, 18:01
Replies: 88
Views: 3,950
Posted By VBCurtis
Sounds like way too big a matrix for an e-small...

Sounds like way too big a matrix for an e-small job. Maybe add 10MQ, if you haven't already moved it to post-processing?
Or, we could do some sieving locally. Let's knock off at least a week from...
Forum: Aliquot Sequences 2020-11-23, 23:34
Replies: 685
Views: 37,451
Posted By VBCurtis
Squaring the 31 is the manner in which one breaks...

Squaring the 31 is the manner in which one breaks 2^4 * 31.
Other powers of 2 would not be a driver; only the perfect number 496 = 2^4 * 31 is a driver.
I believe the same is true for the other...
Forum: Factoring 2020-11-23, 19:18
Replies: 9
Views: 374
Posted By VBCurtis
What does finding more factors in stage 2 have to...

What does finding more factors in stage 2 have to do with that "multiple factors" statement? Those seem completely unconnected, yet you used "because of this". So, I too fear there is a substantial...
Forum: Software 2020-11-23, 16:40
Replies: 35
Views: 4,619
Posted By VBCurtis
At the command line: taskset -c 0-5 ./sllr64 -d ...

At the command line: taskset -c 0-5 ./sllr64 -d

That instance of llr is bound to those 6 cores.
Forum: Aliquot Sequences 2020-11-22, 18:18
Replies: 685
Views: 37,451
Posted By VBCurtis
That's not unusual, at all! I guess I just don't...

That's not unusual, at all! I guess I just don't encounter 2^4 * 31 often enough to pay attention. I appreciate the data!
Forum: Aliquot Sequences 2020-11-22, 16:59
Replies: 685
Views: 37,451
Posted By VBCurtis
13^64. It got down under 50 digits, but picked up...

13^64. It got down under 50 digits, but picked up 2 * 3 so it's back above 110 dig now.

13^58, 60, 62 can be updated on your page also.
Forum: Aliquot Sequences 2020-11-22, 05:22
Replies: 685
Views: 37,451
Posted By VBCurtis
How unusual is it to break 2^4 * 31? I don't...

How unusual is it to break 2^4 * 31? I don't think I've done it before tonight.

Edit: The sequence went 2^4 * 3 * 31 to 2^4 * 3 * 31^2 to 2^6 * 3 * 31, and picked up the downdriver a few terms...
Forum: Information & Answers 2020-11-21, 05:18
Replies: 27
Views: 838
Posted By VBCurtis
If you're drawing 530W from a 500W power supply,...

If you're drawing 530W from a 500W power supply, your hardware will not last long. If you're somewhat lucky, the power supply will fail. If you're less lucky, it'll fail in a way that blows up the...
Forum: NFS@Home 2020-11-20, 19:39
Replies: 88
Views: 3,950
Posted By VBCurtis
5*2^791-1 has factors: p57 factor:...

5*2^791-1 has factors:
p57 factor: 151880995471420485563260391583287247457005251131509944599
p67 factor: 5080420584742637766232124038334332110925922349448403765063448735173
p102 factor:...
Forum: Miscellaneous Math 2020-11-19, 22:42
Replies: 10
Views: 396
Posted By VBCurtis
Yep, I misunderstood you. I thought you were...

Yep, I misunderstood you. I thought you were claiming you had created something more rigorous than the twin primes conjecture to "prove" the infinitude of twin primes.

I don't even know what a...
Forum: NFS@Home 2020-11-19, 18:40
Replies: 23
Views: 1,200
Posted By VBCurtis
On the quintic 16/31 as you wish to submit, I'd...

On the quintic 16/31 as you wish to submit, I'd try bumping alim to 200M while leaving rlim alone. Both yield and sec/rel should improve slightly.
I'd also try mfba of 61 or 60- you might not gain...
Forum: Miscellaneous Math 2020-11-19, 00:14
Replies: 10
Views: 396
Posted By VBCurtis
Did you read the article? Or perhaps I'm...

Did you read the article?

Or perhaps I'm missing what you are trying to achieve; it appears you're rephrasing long-known heuristics and trying to then claim that you've reached a new conclusion...
Forum: FactorDB 2020-11-18, 22:25
Replies: 53
Views: 3,506
Posted By VBCurtis
I am now an elf! Your script prompted me to...

I am now an elf! Your script prompted me to install pari-gp, and I'm running it on 27-digit composites. Not sure how long I'll leave it going, but at 26 and 27 digits most of the numbers split into...
Forum: YAFU 2020-11-18, 16:59
Replies: 6
Views: 179
Posted By VBCurtis
The manual effort to make sure each computer is...

The manual effort to make sure each computer is doing separate Q-ranges, and then combining the files and running the post-processing manually is rather tedious, and usually not used for jobs that...
Forum: YAFU 2020-11-18, 06:28
Replies: 4
Views: 157
Posted By VBCurtis
Welcome! 256-bit inputs are small, and YAFU...

Welcome!
256-bit inputs are small, and YAFU will run the quadratic sieve to factor them. This method is faster for inputs below about 100 decimal digits, but the time to factor scales more steeply...
Forum: Software 2020-11-18, 06:19
Replies: 457
Views: 37,688
Posted By VBCurtis
Buy a discrete GPU? If your GPU doesn't support...

Buy a discrete GPU? If your GPU doesn't support some OpenCL instructions, seems your options are different hardware or run different software.
Forum: Miscellaneous Math 2020-11-18, 04:36
Replies: 10
Views: 396
Posted By VBCurtis
Well, I think both your numbered assumptions are...

Well, I think both your numbered assumptions are incorrect. I think the probabilities are *not* independent, and if they're not the rest of your reasoning doesn't achieve anything.

This article...
Forum: Hardware 2020-11-17, 22:15
Replies: 70
Views: 5,154
Posted By VBCurtis
Single-Rank stock, please.

Single-Rank stock, please.
Forum: Aliquot Sequences 2020-11-17, 22:13
Replies: 468
Views: 34,839
Posted By VBCurtis
Thanks, Ryan! We appreciate it.

Thanks, Ryan! We appreciate it.
Forum: Hardware 2020-11-17, 19:32
Replies: 70
Views: 5,154
Posted By VBCurtis
I don't think msieve is memory-limited with just...

I don't think msieve is memory-limited with just 6 cores, so I doubt the single-rank memory will be much slower than your dual-rank benchmark. Perhaps 3-5% = 10-15 min slower?

I'm prepared to be...
Showing results 1 to 25 of 1000

 
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