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%I #7 May 15 2023 14:24:38
%S 271,523,1123,24344563,96342643,608608243,5577337931669504243,
%T 52580450364682240243,262134882788466688243,13106744139423334400243,
%U 694657439389436723200243,7368624314106569113600243,12931890526958090978845347074978621685760000243
%N Primes of the form k!3 + 3^5, where k!3 is the triple factorial number (A007661).
%H Robert Price, <a href="/A288881/b288881.txt">Table of n, a(n) for n = 1..15</a>
%H Henri& Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n3+3^5&action=Search">PRP Records.Search for n!3+3^5.</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] + 3^5, {i, 0, 100}], PrimeQ[#]&]
%Y Cf. A007661, A247868.
%K nonn
%O 1,1
%A _Robert Price_, Jun 18 2017
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