A171459 Numbers k such that 1 + 6*10^k + 100^k is prime.

2, 4, 24, 32, 34, 72, 75, 164, 532, 1335, 4704, 29762

Offset

1,1

Comments

No more terms up to k=7800. The value corresponding to 4704 was certified prime with WinPFGW.

Links

Table of n, a(n) for n=1..12.

Chris K. Caldwell, Prime Pages, Database Search Output

Prog

(PARI) is(n)=ispseudoprime(1+6*10^n+100^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A171376, A171411, A171514, A171554.

Sequence in context: A090591 A098656 A138611 * A240558 A163896 A350813

Adjacent sequences: A171456 A171457 A171458 * A171460 A171461 A171462

Keyword

more,nonn

Author

Jason Earls, Dec 09 2009

Extensions

a(12) using Caldwell link from Michael S. Branicky, Jun 30 2024

Status

approved