Hello,
I recently read an online thread describing problems that users are having with
the gmp-ecm that is available for Ubuntu 13.10. It appears that gmp-ecm 6.4.2,
when compiled with GMP 5.1.x, has a bug that will sometimes prevent it from
finding factors of numbers. You can read a discussion of, and see the solution
to, this on the ecm-discuss list here:
http://lists.gforge.inria.fr/pipermail/ecm-discuss/2013-July/004234.html
You can also see the bug report filed with Debian back in 2013-June here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=713399
I am not familiar with bug filing procedures, or how to ask that a package in
this repository be updated, but I was hoping that by reporting it here someone
would be willing to update the package available to Ubuntu 13.10 (and later, if
necessary). I believe the best solution would be to update to gmp-ecm 6.4.4 as
that has several bug fixes included in it. If you have any additional
questions, or would like additional details, please let me know. Thanks for
your time.
-David C.
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