A289490 Primes of the form k!4+8, where k!4 is the quadruple factorial number (A007662).
11, 13, 29, 53, 239, 593, 65843, 1514213, 5221133, 4996616633, 1729986783533, 7579867420133, 36453104912477522894633, 2442358029135994033939883, 173407420068655576409731133, 534602198949923693866675351078133, 7419136758370889359733910587728133
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..22
- Henri& Renaud Lifchitz, PRP Records.Search for n!4+8.
- Joe McLean, Interesting Sources of Probable Primes
- OpenPFGW Project, Primality Tester
Crossrefs
Cf. A291343.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 4] + 8, {i, 0, 100}], PrimeQ[#]&]