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Primes of the form k!6-24, where k!6 is the sextuple factorial number (A085158).
1

%I #8 Jul 11 2017 07:41:10

%S 3,31,67,911,21481,43201,623621,1339951,49579051,2131900201,

%T 2229272062301,8549258359016351,606997343490162601,

%U 46738795448742522101,135419196954588922351,131181879631714694053764558690601,4766501963120985802465188343530601

%N Primes of the form k!6-24, where k!6 is the sextuple factorial number (A085158).

%H Robert Price, <a href="/A289733/b289733.txt">Table of n, a(n) for n = 1..19</a>

%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n6-24&amp;action=Search">PRP Records.Search for n!6-24.</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, 6] - 24, {i, 9, 100}], PrimeQ[#]&]

%Y Cf. A289697.

%K nonn

%O 1,1

%A _Robert Price_, Jul 10 2017