A289519 Primes of the form k!4+128, where k!4 is the quadruple factorial number (A007662).

131, 149, 173, 359, 3593, 65963, 151412753, 184874815253, 675141445011750931735785863483259503, 13075173582607657311300240428800205506303238072109503, 12956907789303111531153065870401861366351857094178052776930473828253

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..12

Henri& Renaud Lifchitz, PRP Records.Search for n!4+128.

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, 4] + 128, {i, 0, 100}], PrimeQ[#]&]
Select[Table[Times@@Range[n, 1, -4]+128, {n, 200}], PrimeQ] (* Harvey P. Dale, Aug 13 2023 *)

Crossrefs

Cf. A291348.

Sequence in context: A139970 A159256 A039558 * A045164 A167845 A273049

Adjacent sequences: A289516 A289517 A289518 * A289520 A289521 A289522

Keyword

nonn

Author

Robert Price, Sep 02 2017

Status

approved