Discussion related to cado-nfs

[paul zimmermann <Paul.Zimmermann@inria.fr>]

       Dear Adolfo,

> Dear Paul,
> 
> Yes! Thank you really very much!!!
> 
> Just one more question: if I have to factorize a small number such as
> 576460752303423487, what should I do to have CADO-NFS working?
> 
> Thanking you in advance, I remain
> 
> Sincerely yours,
> Adolfo

CADO-NFS is not designed to factor such small numbers. You could use Sage
instead (sagemath.org):

┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.6, Release Date: 2019-01-15                     │
│ Using Python 2.7.15. Type "help()" for help.                       │
└────────────────────────────────────────────────────────────────────┘
sage: factor(576460752303423487)
179951 * 3203431780337

or Pari/GP (https://pari.math.u-bordeaux.fr/):

                  GP/PARI CALCULATOR Version 2.7.5 (released)
          amd64 running linux (x86-64/GMP-6.0.0 kernel) 64-bit version
  compiled: Nov 10 2015, gcc version 5.2.1 20151028 (Ubuntu 5.2.1-23ubuntu1) 
                           threading engine: pthread
                 (readline v6.3 enabled, extended help enabled)

                     Copyright (C) 2000-2015 The PARI Group

? factorint(576460752303423487)
%1 = 
[       179951 1]

[3203431780337 1]

Hope this helps,
Paul