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Old 2020-10-22, 11:31   #2
xilman
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May 2003
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Quote:
Originally Posted by fivemack View Post
10^10000 - 10^8668 - 1 is a pseudoprime; can I assert that it's prime because we've got a very boring factorisation of 86.68% of n+1 ?
Why do you care?

It isn't that 10k-digit numbers are difficult to prove prime by ECPP or APR-CL these days.
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