A289825 - OEIS

%I #4 Jul 13 2017 21:27:58

%S 1047511,4129751,24285271,2504843351,126757680265156951,

%T 7368624314106569113540951,38900816605808456499140951,

%U 663800167477016615356604425212847831700575205814331164458540403251687739883519999999940951

%N Primes of the form k!3-59049, where k!3 is the triple factorial number (A007661).

%H Robert Price, <a href="/A289825/b289825.txt">Table of n, a(n) for n = 1..9</a>

%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n3-59049&amp;action=Search">PRP Records.Search for n!3-59049.</a>

%H Joe McLean, <a href="http://web.archive.org/web/20091027034731/http://uk.geocities.com/nassarawa%40btinternet.com/probprim2.htm">Interesting Sources of Probable Primes</a>

%H OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>

%t MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];

%t Select[Table[MultiFactorial[i, 3] - 59049, {i, 17, 100}], PrimeQ[#]&]

%Y Cf. A265201.

%K nonn

%O 1,1

%A _Robert Price_, Jul 12 2017