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Old 2019-10-16, 13:53   #14
bsquared's Avatar
Feb 2007

2·32·191 Posts

Originally Posted by ThiloHarich View Post
There are some improvements to Fermat's method.
See -> Sieve improvement.
Ideas like this are how I was able to get 'a' to 10^14 in an hour. But as Xilman said, this would only work if the (presumably 100 digit) factors shared their leading 43 digits.
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