A162714 Primes p such that 3^p-2^(p+1) is also prime.

3, 5, 7, 31, 59, 97, 2341, 4817, 9059, 14327

Offset: 1

Author

Vincenzo Librandi, Jul 11 2009

Keywords

• nonn

Comments

The associated 3^p-2^(p+1) are in A162715.

Examples

			The prime p=3 is in the sequence because 3^3-2^4=11 is prime.
The prime p=5 is in the sequence because 3^5-2^6=179 is prime.
		

Crossrefs

Cf. A162715.

Extensions

Definition simplified, one term added by R. J. Mathar, Aug 02 2009

a(8)-a(10) from Michael S. Branicky, May 25 2023