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A289728 Primes of the form k!6-8, where k!6 is the sextuple factorial number (A085158). 1
19, 47, 83, 397, 1721, 229627, 21827567, 295540237, 13299311017, 678264862267, 3879320022245629336367, 817800727933873464057151867, 85869076433056713726000946867, 9531467484069295223586105103117, 15873007435437477980505511601565617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..26

Henri & Renaud Lifchitz, PRP Records.Search for n!6-8.

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, 6] - 8, {i, 8, 100}], PrimeQ[#]&]

CROSSREFS

Cf. A289686.

Sequence in context: A048970 A068474 A201314 * A141973 A165672 A136686

Adjacent sequences:  A289725 A289726 A289727 * A289729 A289730 A289731

KEYWORD

nonn

AUTHOR

Robert Price, Jul 10 2017

STATUS

approved

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Last modified January 23 03:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)