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A290118 Primes of the form k! / 5 - 1. 1
23, 7983359, 95800319, 4184557977599, 74398665357980243493599889630167039999999, 6690505322632761421634012410688150333030399999999, 281001223550575979708628521248902313987276799999999, 51724648302233636128592871030722395993839526477823999999999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..8

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

MATHEMATICA

Select[Table[k! / 5 - 1, {k, 5, 100}], PrimeQ[#]&]

CROSSREFS

Cf. A139175, A139200.

Sequence in context: A050234 A124993 A013818 * A087527 A013906 A214360

Adjacent sequences:  A290115 A290116 A290117 * A290119 A290120 A290121

KEYWORD

nonn

AUTHOR

Robert Price, Jul 19 2017

STATUS

approved

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Last modified September 25 07:12 EDT 2020. Contains 337335 sequences. (Running on oeis4.)