A288612 Primes of the form k!6+12, where k!6 is the sextuple factorial number (A085158).
13, 17, 19, 67, 103, 947, 1741, 21517, 43237, 894930587, 23481740411754637, 606997343490162637, 3312764729596766399944113137, 1140711996797519078728387466887, 815970262367657972299041020065569977629234387, 20881494984250735169104758744498001297509736890637
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..22
- Henri& Renaud Lifchitz, PRP Records.Search for n!6+12.
- Joe McLean, Interesting Sources of Probable Primes
- OpenPFGW Project, Primality Tester
Crossrefs
Cf. A288155.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 6] + 12, {i, 0, 100}], PrimeQ[#]&] Select[Table[Times@@Range[n,1,-6]+12,{n,200}],PrimeQ] (* Harvey P. Dale, Aug 19 2022 *)