A289737 Primes of the form k!6-48, where k!6 is the sextuple factorial number (A085158).

7, 43, 887, 43177, 21827527, 894930527, 1714167050058087577, 46738795448742522077, 345259481979861010937327, 40054638345554502541724271794327, 131181879631714694053764558690577, 15873007435437477980505511601565577, 595812745390123225308148542941328077

Offset: 1

Author

Robert Price, Jul 10 2017

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..18
• Henri & Renaud Lifchitz, PRP Records.Search for n!6-48.
• Joe McLean, Interesting Sources of Probable Primes
• OpenPFGW Project, Primality Tester

Crossrefs

Cf. A289701.

Programs

Mathematica

MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 6] - 48, {i, 11, 100}], PrimeQ[#]&]