A289549 Primes of the form k!6-3, where k!6 is the sextuple factorial number (A085158).
2, 3, 13, 37, 73569236156415997, 2076797833465298943997, 3445912395099815280639997, 337699414719781897502719997, 2406637297721880276844203212799997, 56505983376657530671203898929399315771217221372411818526783048069123288081453694320639999999999997
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..10
- Henri & Renaud Lifchitz, PRP Records.Search for n!6-3.
- Joe McLean, Interesting Sources of Probable Primes
- OpenPFGW Project, Primality Tester
Crossrefs
Cf. A279646.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 6] - 3, {i, 3, 100}], PrimeQ[#]&]