A141802 Numbers n such that 2*29^n + 1 is prime.

0, 1, 3, 5, 7, 23, 177, 327, 875, 6645, 26605

Offset: 1

Author

Rick L. Shepherd, Jul 08 2008

Keywords

• nonn
• more
• hard

Comments

Primes found and proved by PrimeForm. No more terms up to 20000.

Crossrefs

Cf. A141798.

Programs

PARI

is(n)=ispseudoprime(2*29^n+1) \\ Charles R Greathouse IV, Jun 06 2017

Extensions

a(11) from Michael S. Branicky, Dec 14 2023