A290123 Primes of the form k! / 10 - 1.

11, 71, 503, 3991679, 622702079, 35568742809599, 30488834461171386050150399999, 579712602074736798587973423157810910541235724473162595874586504971639017969389205625618453424974594047999999999999999999

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..9

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

Mathematica

Select[Table[k! / 10 - 1, {k, 5, 100}], PrimeQ[#]&]

Crossrefs

Cf. A139205, A290116, A290117, A290118, A290119, A290120, A290121, A290122.

Sequence in context: A199488 A068847 A139185 * A103998 A160587 A338416

Adjacent sequences: A290120 A290121 A290122 * A290124 A290125 A290126

Keyword

nonn

Author

Robert Price, Jul 19 2017

Extensions

Missing terms inserted by Alois P. Heinz, Dec 05 2024

Status

approved