New Primo record by Tom Wu:
18666 decimal digits!
The old monoprocessor version of Primo for Windows is no more distributed.
Primo 4.0.3 (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.
The NX, ECB and CPG softwares are no more distributed.