A290189 Primes of the form k!*3^k - 1.

2, 17, 254561089305599, 8483004771271882804592639999, 706526001186582385898210420541078864497278132689882316799999999, 353401447088718405944982176443380974931403135679741865504466985287679999999999

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..7

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

Mathematica

Select[Table[k!*3^k - 1, {k, 0, 100}], PrimeQ[#]&]

Crossrefs

Cf. A121859.

Sequence in context: A114950 A112969 A208208 * A279883 A266166 A077452

Adjacent sequences: A290186 A290187 A290188 * A290190 A290191 A290192

Keyword

nonn

Author

Robert Price, Jul 23 2017

Status

approved