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Old 2020-09-10, 22:15   #5
VBCurtis's Avatar
Feb 2005
Riverside, CA

3·5·307 Posts

How long will it take this program to search for all 70-digit factors? Or, most of them? How about 1% of the 70-digit range?

ECM on this number has ruled out factors smaller than about 67 digits, and a 70-digit or smaller factor is unlikely. So, I'm not even sure you should set it to look at 70 digits- maybe 73 is smarter. How many k's are there that make 73-digit candidate factors?
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