A289862 Primes of the form k!12-2, where k!12 is the 12-way factorial number.

2, 3, 5, 7, 11, 43, 83, 131, 251, 1213, 101063, 9750893, 152248003, 285322741626047123, 8302574797625128819132459123, 67181587479226956985234896806020123, 1172033190943919440853994654211209373, 759087463098373416970361948926267515623

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..31

Henri & Renaud Lifchitz, PRP Records.Search for n!12-2.

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

Mathematica

MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 12] - 2, {i, 3, 100}], PrimeQ[#]&]

Crossrefs

Cf. A284132.

Sequence in context: A040130 A127727 A232183 * A036343 A058253 A004089

Adjacent sequences: A289859 A289860 A289861 * A289863 A289864 A289865

Keyword

nonn

Author

Robert Price, Jul 13 2017

Status

approved