A289730 Primes of the form k!6-12, where k!6 is the sextuple factorial number (A085158).
43, 79, 21493, 623633, 21827563, 49579063, 104463111013, 32799650788086796039050613, 101604346379043295513350613, 3312764729596766399944113113, 40054638345554502541724271794363, 268110968591974440568718596462044971863, 10693051341516541524605341900168015859363
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..15
- Henri & Renaud Lifchitz, PRP Records.Search for n!6-12.
- Joe McLean, Interesting Sources of Probable Primes
- OpenPFGW Project, Primality Tester
Crossrefs
Cf. A289688.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 6] - 12, {i, 8, 100}], PrimeQ[#]&] Select[Table[Times@@Range[n,1,-6]-12,{n,8,200}],PrimeQ] (* Harvey P. Dale, Jan 16 2024 *)