"Hjalmarson, Harold P." wrote: > ... > All of my source code is identical for these two calculations. > > Any comments about known problems would be much appreciated because it can > be difficult to compare "identical" probabilistic calculations. > ... > > Harry > --- > Harold P. Hjalmarson If the random number generator is prime suspect, is there a possibility, for test purposes only, to replace it with a fixed number or with a pseudo random number generator, and run it on both versions to check the hypothesis. Fred Marton