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Old 2017-05-02, 12:18   #9
sweety439
 
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Nov 2016

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Other special cases:

k=1, c=1, b is even: the generalized Fermat primes in base b.
k=1, c=1, b is odd: the generalized half Fermat primes in base b.
k=1, c=-1: the repunit primes in base b.
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