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Forum: Math 2009-05-01, 18:14
Replies: 3
Views: 650
Posted By bitblit
Mersenne factor

Given a natural number n. Is it true, that for each prime factor p of n the p-th Mersenne number 2^p - 1 is a factor of 2^(2^n - 1) - 2^n - 1 ?
Forum: Math 2009-04-23, 18:07
Replies: 8
Views: 822
Posted By bitblit
testing, if a number is a power

Which is the fastest possible way to decide, whether a given natural number n is of the form n = a^b with integer a and b > 1?
(it is needed for the AKS primality test)
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