In an attempt to obtain more empirical data to support/contradict my contention that we should be using higher values of E where possible in P-1 testing, I have been re-factorising large numbers of small Mersennes which have had inadequate P-1s to date - so far, just those that had previously been tested to no higher than B1=B2=3000. I will report my findings in due course.
Imagine my delight at finding the following enormous factor in my results.txt file:- [Sat Jan 18 20:21:28 2003] P-1 found a factor in stage #2, B1=30000, B2=547500. UID: daran/1, M2010413 has a factor: 18636782044954323215047758147550989193 At 38 digits, this dwarfs my previous largest find at 26 digits. As I suspected, it turned out to be composite: 26270256567937408841 * 709425200959031873 Neither are non-smooth to the specified limits, so I will count this as two negative results in my final tally. The question is, how are multiple factors handled in the database? Regards Daran G. _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
