Mike I feel your pain about those large factors that are actually composite, it might be a good idea if everyone who finds a factor through p-1 tries factoring the factor.

This is a pretty good applet for doing so...

http://www.alpertron.com.ar/ECM.HTM

BTW nice speed on those small factors and I like the idea of the top 100 and top 10.

Is there any chance of expanding your stats further to 50M or 100M when the time comes? Would this be difficult to do etc...