A289724 Primes of the form 3^k - 22.

5, 59, 19661, 1594301, 22876792454939, 2954312706550833698621, 8862938119652501095907, 6170365191715177779482467945369860501784408913594010934644126825341528124785676079587659

Offset

1,1

Links

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

F. Firoozbakht and M. F. Hasler, Variations on Euclid's formula for Perfect Numbers, JIS 13 (2010) #10.3.1.

Henri and Renaud Lifchitz, PRP Records

OpenPFGW Project, Primality Tester

Formula

a(n) = 3^A219043(n) - 22. - Elmo R. Oliveira, Nov 12 2023

Mathematica

Select[Table[3^k - 22], {k, 3, 100}], PrimeQ[#] &]

Crossrefs

Cf. A000040, A219043 (corresponding k's).

Sequence in context: A143766 A132549 A091457 * A100906 A126275 A059602

Adjacent sequences: A289721 A289722 A289723 * A289725 A289726 A289727

Keyword

nonn

Author

Robert Price, Sep 02 2017

Status

approved