[seqfan] A242927

Don Reble djr at nk.ca
Sat Mar 24 02:36:16 CET 2018


> %I A242927
> %S 1,2,6,42
> %N Numbers n such that k^n + (k+1)^n + ... + (k+n-1)^n is prime for some k.

    There's only one more term of A242927: a(5)=1806. A resulting
    "prime" (k=3081) has 6663 digits: so far it's just a rather strong
    (Miller-Rabin) probable prime.
    Is it possible to prove primality for such a big number?

Don Reble  djr at nk.ca

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