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A173975
Numbers k such that k^k + 115 is prime.
0
6, 8, 18, 36, 38, 176
OFFSET
1,1
COMMENTS
a(7) > 3000. - Daniel Starodubtsev, Aug 05 2019
MATHEMATICA
f[n_]:=PrimeQ[n^n+115]; lst={}; Do[If[f[n], AppendTo[lst, n]], {n, 6!}]; lst
PROG
(PARI) is(n)=ispseudoprime(n^n+115) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved