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Re: Advice on factoring 150-digit numbers

fjuno37 — Sun, 22 Nov 2009 01:20:33 GMT

... Great! Hello, this is the Juno stating that I am currently factoring a 150-digit composite number for the form 10^420 + 1 and I understood the point of

Re: Advice on factoring 150-digit numbers

Freddie Witherden — Sat, 21 Nov 2009 19:46:21 GMT

... Does GMP-ECM help with polynomial selection? I thought it was just used to knock-out small factors? Finally, when selecting the range to sieve did you just

Re: HII

Freddie Witherden — Sat, 21 Nov 2009 19:17:46 GMT

Hello, ... In order to help resolve your problem we are going to require some more information. Firstly, what file is giving you compiler errors and what form

Re: Advice on factoring 150-digit numbers

Al Edwards — Sat, 21 Nov 2009 19:14:39 GMT

... I have 12 AMD Opteron cores averaging 2.3 GHz, and I run 64-bit Linux so as to use the faster 64-bit lattice sievers and GMP-ECM. The C158 was not bad:

Re: Advice on factoring 150-digit numbers

Jason Papadopoulos — Sat, 21 Nov 2009 18:29:13 GMT

... Msieve's poly selector does not randomize anything when given a range of coefficients to search, so you will crunch the same numbers multiple times. For

Re: Advice on factoring 150-digit numbers

Freddie Witherden — Sat, 21 Nov 2009 18:09:53 GMT

... Okay. So my current plan is to run a load of msieve instances (one-per-core- per-system). However, msieve auto-selects a range between [0,n] for me for a

HII

i gad — Sat, 21 Nov 2009 16:49:16 GMT

i have problem in compiling the source code for sieve file in GNFS ihave dev c++ ,vista

Re: Advice on factoring 150-digit numbers

Al Edwards — Fri, 20 Nov 2009 23:57:34 GMT

I have a load of polynomials (produced by msieve and then concatenated) along with 'n', but can not work out the correct calling convention for the program.

Re: Advice on factoring 150-digit numbers

Freddie Witherden — Fri, 20 Nov 2009 22:47:12 GMT

Hi, ... Yes, that seems to be just what I need! I've been playing around with some smaller numbers first -- just to get my bearings. It seems simple to divide

Re: Advice on factoring 150-digit numbers

David Willmore — Fri, 20 Nov 2009 15:58:25 GMT

On Wed, Nov 18, 2009 at 2:28 PM, Freddie Witherden ... Freddie, You can always use the 'kill -STOP ' and 'kill -CONT ' commands at a unix shell

Re: Advice on factoring 150-digit numbers

Freddie Witherden — Wed, 18 Nov 2009 19:33:06 GMT

... Yes, I think I remember seeing that when I ran msieve --help (the [X,Y] range). However, how should one go about determining the overall range (is it 0..Y

Advice on factoring 150-digit numbers

Al Edwards — Wed, 18 Nov 2009 19:01:50 GMT

150 digits should not be too difficult on the resources you describe. A quad-core system should be able to handle the workload in 10-12 days. Even the

Advice on factoring 150-digit numbers

Freddie Witherden — Wed, 18 Nov 2009 17:13:42 GMT

Hi all, As inferred from the subject I am interested in factoring an ~150 digit composite (p*q where p and q are prime; p != q). It is my understanding that by

Re: estimated time to run ggnfs

Jeff Gilchrist — Tue, 17 Nov 2009 12:24:52 GMT

... You can get good estimates from these graphs here: http://homepage2.nifty.com/m_kamada/math/graphs.htm There are total time graphs for both GNFS and SFNS,

estimated time to run ggnfs

H.M.B. Ibrahim — Tue, 17 Nov 2009 07:44:44 GMT

dear all I would be thankful if someone provide me the estimated time to run GGNFS on different integers. You can fix any machine, for example core2 due 2.ghz.