I spent the day mulling over this problem, and then implemented my solution when I got home. This is for the easier problem of 7**8 zeros: On my linux box, running something around 2 GHz, my script runs for about two minutes and the answer is 23059225. You can verify your code to that. I checked that the answer was correct for 7**2, 7**3, and 7**4.
My script is only 25-30 lines long. It isn't too complicated. The only place I used strings was when verifying the length of trailing zeros, not in the actual solution at all. Cheers _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
