A289727 Primes of the form k!6-6, where k!6 is the sextuple factorial number (A085158).
929, 1723, 21499, 1339969, 49579069, 42061737019, 8549258359016369, 815970262367657972299041020065569977629234369, 128107331191722301650949440150294486487789796869, 320745817436192067170665942374782284454205305520925161570651550901795210373583984369
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..13
- Henri & Renaud Lifchitz, PRP Records.Search for n!6-6.
- Joe McLean, Interesting Sources of Probable Primes
- OpenPFGW Project, Primality Tester
Crossrefs
Cf. A289685.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 6] - 6, {i, 6, 100}], PrimeQ[#]&]