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Old 2017-06-24, 12:11   #1
devarajkandadai's Avatar
May 2004

4748 Posts
Default Modified Fermat pseudoprime

We can define above as a composite number which behaves like
a prime number with respect to modified Fermat's theorem.

Example: 21; (7 + i)^440==1 (mod 21).

Note (7+i)^20 is not congruent to 1 (mod 21).
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