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Re: [Cado-nfs-discuss] Large semiprime factorization


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  • From: Earl Fechter <earlfechter@gmail.com>
  • To: Pierrick Gaudry <pierrick.gaudry@loria.fr>
  • Subject: Re: [Cado-nfs-discuss] Large semiprime factorization
  • Date: Sat, 8 Apr 2017 22:13:45 -0400
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  • Resent-date: Sun, 9 Apr 2017 08:55:05 +0200
  • Resent-from: Pierrick Gaudry <gaudry@bratwurst>
  • Resent-message-id: <20170409065505.k45zltiedithquzx@bratwurst>
  • Resent-to: cado-nfs-discuss@lists.gforge.inria.fr
No, I don't. But I'm planning on using a bunch of jailbroken iphones as
slaves to my desktop computer. I know I'll realistically have a very slim
chance of splitting the number with my home computer, but I'm doing it like
the lottery: you know you probably wont win, but that doesn't keep you from
trying.


About that parameter: what IS a parameter, and how do you find one?
H.S freshman, not the world's best mathematician, lol.

Help would be appreciated,

-E

Sent from my iPhone

> On Apr 8, 2017, at 2:09 PM, Pierrick Gaudry <pierrick.gaudry@loria.fr>
> wrote:
>
> Cado-nfs requires a parameter file for each size of number to be factored
> (even if you try to factor a prime ;-)). If you give a number of, say,
> 1024 bits, then there is no parameter file and it won't even try.
>
> You can try to craft a parameter file by extrapolating from what is
> already is parameters/factor, but don't expect miracles: if there is no
> parameter file, then we didn't test this size, and for sure there will be
> problems...
>
> I guess you have access to huge computing resources to hope to factor a
> number larger than the available parameters, don't you?
>
> Pierrick
>
>
>> On Sat, Apr 08, 2017 at 12:40:21PM -0400, Earl Fechter wrote:
>> Im trying to factor a large prime. Cado nfs wont even try. How do I make
>> CADO do what I want?
>>
>> Sent from my iPhone
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>> Cado-nfs-discuss@lists.gforge.inria.fr
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