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Old 2003-09-15, 18:44   #10
smh's Avatar
Oct 2002

29·41 Posts

The link above shows the 10 largest factors ever found with P-1 (if the file is up to date). Only 3 of these were found with prime95/mprime.

Factors found with p-1 above 39 digits are rare (although i'm convinced many more will be found if more time is spend running P-1 compared to ECM).

If it takes 1 minute to test for 6 missing digits it will take about 190 years to test for 14 missing digits.

I't might be faster to rerun P-1 with high memory limits to see if the factor can be found again.
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