Quote:
Originally posted by wblipp
But your Java applet tells me that
56951294401 = 37 x 41 x 43 x 881 x 991
I'd be surprised if there are any new prime factors in the list  the ECM work should have found most factors below 20 digits by now.

Yes, you are right. It appears that these numbers above are Fermatpseudoprimes base a lot of numbers. When I added a filter to exclude composites no factors were generated by the program (at least for A less than 1000000).