A290120 - OEIS

%I #7 Jul 22 2017 10:08:53

%S 719,51839,347557429739519999,3693145248412139519999,

%T 786088879973155564264329346971464984708807393279999999999,

%U 32977671048463054353156106097575368726182652081686848733183999999999999

%N Primes of the form k! / 7 - 1.

%H Robert Price, <a href="/A290120/b290120.txt">Table of n, a(n) for n = 1..9</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 Select[Table[k! / 7 - 1, {k, 7, 100}], PrimeQ[#]&]

%Y Cf. A139177, A139202.

%K nonn

%O 1,1

%A _Robert Price_, Jul 19 2017