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A290121 Primes of the form k! / 8 - 1. 1

%I

%S 5039,453599,4989599,2615348735999,15205637551103999,

%T 32327905188896022580370544394201497496149704048639999999999,

%U 68043117384680383000466155030980344080536633048599859316607515858708885143551999999999999999

%N Primes of the form k! / 8 - 1.

%H Robert Price, <a href="/A290121/b290121.txt">Table of n, a(n) for n = 1..7</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! / 8 - 1, {k, 8, 100}], PrimeQ[#]&]

%Y Cf. A139183, A139203.

%K nonn

%O 1,1

%A _Robert Price_, Jul 19 2017

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Last modified September 25 05:14 EDT 2020. Contains 337334 sequences. (Running on oeis4.)