Windows Factoring Software Binaries
(64bit & 32bit)

by Jeff Gilchrist
Jeff's E-mail Address

Last Updated:  February 9, 2010

This page has links to various Factoring software that I have compiled from source for Windows in 64bit and 32bit using Visual Studio 2008. Benchmarking information is provided on the Benchmarking Page.

Note: You may need to download and install "vcredist_x86.exe" Microsoft Visual C++ 2008 SP1 Redistributable Package if the application does not work when you try to run it.
GGNFS - Number Field Sieve (GNFS/SNFS)

Official Project Site

Beginners Guide to NFS factoring using GGNFS and MSIEVE

Type Processor Version Size FileDate
32bitx86SVN 3744.2 MBggnfs-svn374-win32-p4.zip11/01/2009
64bitCore 2SVN 3744.9 MBggnfs-svn374-win64-core2.zip11/01/2009
64bitAMD64SVN 3745.0 MBggnfs-svn374-win64-opteron.zip11/01/2009
32bitx86SVN 3603.8 MBggnfs-svn360-win32-p4.zip04/26/2009
64bitCore 2SVN 3604.3 MBggnfs-svn360-win64-core2.zip04/26/2009
64bitAMD64SVN 3604.3 MBggnfs-svn360-win64-opteron.zip04/26/2009


GMP-ECM - Elliptic Curve Method (ECM), P-1, P+1

Official Project Site

Type Processor Version Size FileDate
32bitIntel6.2.3 (with MPIR 1.1.1)356 KBecm623_win32_intel.zip04/26/2009
32bitAMD6.2.3 (with MPIR 1.1.1)356 KBecm623_win32_amd.zip04/26/2009
64bitCore26.2.3 (with MPIR 1.1.1)398 KBecm623_win64_core2.zip04/26/2009
64bitAMD646.2.3 (with MPIR 1.1.1)397 KBecm623_win64_amd64.zip04/26/2009
32bitIntel6.2.2 (with MPIR 1.0.0)346 KBecm622_win32_intel.zip03/29/2009
32bitAMD6.2.2 (with MPIR 1.0.0)345 KBecm622_win32_amd.zip03/29/2009
64bitCore26.2.2 (with MPIR 1.0.0)388 KBecm622_win64_core2.zip03/29/2009
64bitAMD646.2.2 (with MPIR 1.0.0)388 KBecm622_win64_amd64.zip03/29/2009


MSIEVE - Self-Initializing Quadratic Sieve (SIQS) and Number Field Sieve (GNFS/SNFS)

Official Project Site

Beginners Guide to NFS factoring using GGNFS and MSIEVE

Type Processor Version Size FileDate
32bitx861.44 (with GMP 4.2.1/GMP-ECM 6.2.2)835 KBDownload from official project site02/05/2010
32bitIntel1.44 (with MPIR 1.3.1/GMP-ECM SVN 1422)459 KBmsieve144_win32.zip02/09/2010
64bitCore 21.44 (with MPIR 1.3.1/GMP-ECM SVN 1422)557 KBmsieve144_win64.zip02/09/2010
32bitIntel1.43 (with MPIR 1.3.0/GMP-ECM SVN 1422)457 KBmsieve143_win32.zip10/24/2009
64bitCore 21.43 (with MPIR 1.3.0/GMP-ECM SVN 1422)558 KBmsieve143_win64.zip10/24/2009


YAFU - Quadratic Sieves (SIQS/MPQS/QS), Elliptic Curve Method (ECM), P-1, P+1, Squfof, Rho, and Fast Sieve of Eratosthenes

Official Project Site

Type Processor Version Size FileDate
32bitIntel & AMD1.15856 KBDownload from official project site12/06/2009
64bitIntel & AMD1.151080 KBDownload from official project site12/06/2009
32bitIntel & AMD1.12468 KBDownload from official project site09/25/2009
64bitIntel & AMD1.12457 KByafu-1.12-win64bin.zip10/24/2009

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