Elliptic Curve Primality Proving

January 4, 2015
Primo 4.1.1 (executable for Linux 64-bit).
Primo is a primality proving program based on the ECPP (Elliptic Curve Primality Proving) algorithm. With Primo one can quickly check whether crypto-pseudoprimes are actually prime... or not.

December 28, 2014
New Primo (and ECPP) record: 29271 decimal digits!

April 28, 2013
The old monoprocessor version of Primo for Windows is no more distributed.

April 24, 2011
The NX, ECB and CPG softwares are no more distributed.

May 28, 2009
Factoring Class Polynomials over the Genus Field.
All the references to the patent pending (WO/2005/004383) double-eta quotient invariants have been suppressed.
The Internet links have been updated.

April 10, 2007
An unexpected use of Primo: http://hal.inria.fr/inria-00138382/en/.

August 3, 2001
First Primo release.

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