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Numbers n such that (n!)^8 + 1 is prime.
0

%I #7 Aug 26 2014 09:30:31

%S 0,1,2,58,75,347

%N Numbers n such that (n!)^8 + 1 is prime.

%C Corresponding primes of the form (n!)^8 + 1 are {2,2,257,...}.

%C a(7) > 7000. - _Robert Price_, Aug 26 2014

%t Do[f=(n!)^8+1;If[PrimeQ[f],Print[{n,f}]],{n,1,75}]

%Y Cf. A060890, A051855, A046029, A002981.

%K more,nonn,hard

%O 1,3

%A _Alexander Adamchuk_, Sep 10 2006

%E 347 from _Ryan Propper_, Jan 03 2008