A288610 Primes of the form k!6+6, where k!6 is the sextuple factorial number (A085158).

7, 11, 13, 61, 97, 941, 49579081, 2131900231, 5745471106381, 354465826066854004794020104381, 37267424634284447239051884908224251090631, 227836844933692950264766019866879913915703131, 128107331191722301650949440150294486487789796881

Offset: 1

Author

Robert Price, Jun 11 2017

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..18
• Henri& Renaud Lifchitz, PRP Records.Search for n!6+6.
• Joe McLean, Interesting Sources of Probable Primes
• OpenPFGW Project, Primality Tester

Crossrefs

Cf. A287956.

Programs

Mathematica

MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 6] + 6, {i, 0, 100}], PrimeQ[#]&]