A172413 Positive numbers n such that 11^n + n + 1 is prime.

1, 29, 35, 1309, 84379

Offset: 1

Author

Matevz Markovic, Jun 30 2011

Keywords

• nonn

Comments

11^n + n + 1 for n = 84379 is a probable prime.

There are no further terms up to 100000.

Crossrefs

Cf. A005808, A046867, A109076.

Programs

Mathematica

Do[ If[PrimeQ[11^m + m + 1 ] , Print[m]], {m, 5000}]

PARI

is(n)=ispseudoprime(11^n+n+1) \\ Charles R Greathouse IV, Jun 13 2017