A174270 Primes p such that 17^p - 16 is also prime.

11, 127, 149, 25679

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Formula

A034922 INTERSECT A000040. - R. J. Mathar, Jul 06 2010

Example

For p=11, 17^11 - 16 = 34271896307617 which is prime.

Prog

(Magma) [ p: p in PrimesUpTo(2000)| IsPrime(17^p-16)]

Crossrefs

Cf. A000040, A034922.

Sequence in context: A015597 A296732 A156970 * A335954 A333244 A141987

Adjacent sequences: A174267 A174268 A174269 * A174271 A174272 A174273

Keyword

nonn,bref

Author

Vincenzo Librandi, Mar 14 2010

Extensions

a(4) from Michael S. Branicky, Nov 20 2022 using A034922

Status

approved