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A289825 Primes of the form k!3-59049, where k!3 is the triple factorial number (A007661). 1
1047511, 4129751, 24285271, 2504843351, 126757680265156951, 7368624314106569113540951, 38900816605808456499140951, 663800167477016615356604425212847831700575205814331164458540403251687739883519999999940951 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..9

Henri & Renaud Lifchitz, PRP Records.Search for n!3-59049.

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, 3] - 59049, {i, 17, 100}], PrimeQ[#]&]

CROSSREFS

Cf. A265201.

Sequence in context: A030092 A237073 A179448 * A013696 A075976 A075977

Adjacent sequences:  A289822 A289823 A289824 * A289826 A289827 A289828

KEYWORD

nonn

AUTHOR

Robert Price, Jul 12 2017

STATUS

approved

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Last modified November 17 18:24 EST 2019. Contains 329241 sequences. (Running on oeis4.)