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Search: Posts Made By: bearnol
Forum: Miscellaneous Math 2015-12-28, 10:44
Replies: 2
Views: 449
Posted By bearnol
Introduction to Algebraic and Abelian Functions

Has anyone else read this book? (Just got it for Christmas) Nice one Serge! :)
Seriously tho' - I wonder if Amazon would give me my money back...
J
Forum: Factoring 2015-03-18, 23:31
Replies: 1
Views: 476
Posted By bearnol
YAFA

https://groups.google.com/forum/#!topic/sci.math/Xr2oHM5RPe0
Forum: Computer Science & Computational Number Theory 2013-06-13, 03:55
Replies: 58
Views: 9,668
Posted By bearnol
Hi again yoyo et al. I'd like to mention 3...

Hi again yoyo et al.
I'd like to mention 3 things:
(1) If you're using an ECPP prover with factordb.com ( sounds like a cool idea, btw) you don't actually need to fully certify each PRP, just the...
Forum: FactorDB 2013-05-13, 09:48
Replies: 126
Views: 15,165
Posted By bearnol
That would be like calling the GMP-ECM source...

That would be like calling the GMP-ECM source "lenstra243" :)
Forum: FactorDB 2013-04-27, 20:43
Replies: 126
Views: 15,165
Posted By bearnol
Correct. Also if you use the latest source...

Correct. Also if you use the latest source (atkin243) it should be identical between different OSs
J
Forum: FactorDB 2013-04-27, 20:26
Replies: 126
Views: 15,165
Posted By bearnol
Thanks for that output, which looks correct....

Thanks for that output, which looks correct. (though you can also run with the -q rather than -Q if you want a little more detail)
I would (vaguely) suggest -B 2000 for any number under 1000-digits...
Forum: FactorDB 2013-04-27, 16:59
Replies: 126
Views: 15,165
Posted By bearnol
Hmmmmm that does seem a little slow. Are you...

Hmmmmm that does seem a little slow. Are you getting any output at all? For a number that small you might find the (additional) switch -B 2000 will speed things up.
J
Forum: FactorDB 2013-04-27, 10:48
Replies: 126
Views: 15,165
Posted By bearnol
You are correct that it needs libgmpxx.a as well...

You are correct that it needs libgmpxx.a as well as libgmp.a
If you compile with the flags -lgmpxx -lgmp then this will dynamically link, as you say.
I _thought_ that if you added the flag -static...
Forum: GPU Computing 2013-04-25, 06:59
Replies: 54
Views: 3,382
Posted By bearnol
Superfac13 on big mersenneplustwos (3M+), please ...

Superfac13 on big mersenneplustwos (3M+), please
J
Forum: FactorDB 2013-04-24, 16:30
Replies: 126
Views: 15,165
Posted By bearnol
I don't know if GMP-ECPP would suit - but I'd be...

I don't know if GMP-ECPP would suit - but I'd be happy for you to try
J
Forum: Lounge 2013-02-21, 15:20
Replies: 11
Views: 635
Posted By bearnol
Seriously, tho, you just might be the right...

Seriously, tho, you just might be the right person to ask:
I've just kegged my first home brew - from a St. Peter's Ruby Red kit.
I was a little concerned because the bubbler never fully bubbled...
Forum: Lounge 2013-02-21, 15:05
Replies: 11
Views: 635
Posted By bearnol
You're still as incorrigible as ever, I see! :)

You're still as incorrigible as ever, I see! :)
Forum: Lounge 2013-02-21, 08:33
Replies: 11
Views: 635
Posted By bearnol
'Tis I, James Wanless (now 45)

'Tis I, James Wanless (now 45)
Forum: Lounge 2013-02-20, 17:08
Replies: 11
Views: 635
Posted By bearnol
You (davieddy) were my old A-level physics...

You (davieddy) were my old A-level physics teacher! [we have since then briefly spoken by PM].
Though since I gather you're a dark-bluer, you're of course a sworn enemy of a light-bluer like me (and...
Forum: YAFU 2012-11-14, 14:43
Replies: 23
Views: 2,766
Posted By bearnol
Maybe in binary?

Maybe in binary?
Forum: YAFU 2012-11-14, 08:16
Replies: 23
Views: 2,766
Posted By bearnol
Thanks for your post, henryzz. I would tend to...

Thanks for your post, henryzz. I would tend to agree with you
J
Forum: YAFU 2012-11-13, 18:34
Replies: 23
Views: 2,766
Posted By bearnol
I guess what I'm suggesting is more-or-less the...

I guess what I'm suggesting is more-or-less the exact inverse of long multiplication, using recursion to consider all the possibilities at each digit-level.
Don't know how feasible it would be,...
Forum: YAFU 2012-11-12, 16:10
Replies: 23
Views: 2,766
Posted By bearnol
Couple more observations (hopefully!) 1) I...

Couple more observations (hopefully!)
1) I imagine one could could equally well attack the number from the LSB (rather than) MSB end
2) To remove the restriction on semiprimes, pad with zeroes, and...
Forum: YAFU 2012-11-12, 14:48
Replies: 23
Views: 2,766
Posted By bearnol
Interesting question. (don't know whether it's...

Interesting question. (don't know whether it's homework or not! :) )
If one knows definitely in advance that there are exactly two factors of the same length (ie it's a semiprime), then it might be...
Forum: Puzzles 2012-07-16, 12:44
Replies: 213
Views: 27,465
Posted By bearnol
You're aware that the first prime-instance might...

You're aware that the first prime-instance might not necessarily start at the first instance?
(this is the same mistake as Shallit made)
J
Forum: Programming 2012-07-13, 20:43
Replies: 17
Views: 1,125
Posted By bearnol
Yep, that's me - thanks for your contribution to...

Yep, that's me - thanks for your contribution to WEP-M+2. (I had also wondered if that might be you :) In fact I guess, if I'm honest, that had partly inspired my post here!
J
Forum: Programming 2012-07-12, 15:26
Replies: 17
Views: 1,125
Posted By bearnol
Interesting... let us know how it goes... So I...

Interesting... let us know how it goes...
So I looked up Proth's theorem on Wikipedia, somehow not having come across it before, and regrettably there wasn't a proof there, but:
Incidentally, I...
Forum: Math 2012-02-03, 10:54
Replies: 10
Views: 735
Posted By bearnol
Though _maybe_ Fermat's Little Theorem can save...

Though _maybe_ Fermat's Little Theorem can save my line of reasoning here...
J
Forum: Math 2012-02-03, 10:39
Replies: 10
Views: 735
Posted By bearnol
Hmmm... possibly not - I think I may be confusing...

Hmmm... possibly not - I think I may be confusing my exponent w/ my number... :)
J
Forum: Math 2012-02-03, 10:37
Replies: 10
Views: 735
Posted By bearnol
Since every factor of a Mersenne number is of the...

Since every factor of a Mersenne number is of the form 2kp+1 [p being the exponent] same reasoning applies for composites, no?
J
Showing results 1 to 25 of 127

 
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