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Old 2012-10-27, 16:04   #1

23·17·73 Posts
Default Generalized Mersenne Primes

I believe that I remember a theorem having to do with Generalized Mersenne primes of the form: (a^n+b^n)/(a+b).
The theorem states that if (a^n+b^n)/(a+b) is prime, then n must also be prime.
Does anyone know a reference that has a proof of this?
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