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Factor integers using the Elliptic Curve Method (library)

gmp-ecm is a free implementation of the Elliptic Curve Method (ECM) for integer factorization.

The original purpose of the ECMNET project was to make Richard Brent's prediction true, i.e. to find a factor of 50 digits or more by ECM. This goal was attained on September 14, 1998, when Conrad Curry found a 53-digit factor of 2^677-1 c150 using George Woltman's mprime program. The new goal of ECMNET is now to find other large factors by ecm, mainly by contributing to the Cunningham project, most likely the longest, ongoing computational project in history according to Bob Silverman. A new record was set by Nik Lygeros and Michel Mizony, who found in December 1999 a prime factor of 54 digits using GMP-ECM.

See for more informations about ecmnet.

This package provides the static library.

Package version:6.2-1


gmp-ecm (6.2-1) unstable; urgency=low

  * New Upstream Version
  * Fix build failure caused by longlong.h on some architecture,
    patch from upstream r1298 (closes: #483161).

 -- Laurent Fousse <>  Wed, 28 May 2008 10:39:04 +0200

gmp-ecm (6.2~rc2-1) unstable; urgency=low

  * New Upstream release candidate.
  * New package libecm0 for dynamic lib (closes: #474083).

 -- Laur


r1288 | kruppa | 2008-05-16 14:38:03 +0200 (Fri, 16 May 2008) | 2 lines
Changed paths:
   M /trunk/

Set version to 6.2, set assertions to off by default

r1287 | kruppa | 2008-05-16 14:27:26 +0200 (Fri, 16 May 2008) | 2 lines
Changed paths:



This package was debianized by Laurent Fousse <> on
Tue, 22 Apr 2003 10:19:24 +0200.

It was downloaded from

Upstream Authors (from upstream `AUTHORS' file):
    Jim Fougeron <jfoug at cox dot net>
    Laurent Fousse <laurent at komite dot net>
    Alexander Kruppa <> (substitute appropriately)
    Dave Newman <davi

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