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

1, 29, 35, 1309, 84379

Offset

1,2

Comments

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

There are no further terms up to 100000.

Links

Table of n, a(n) for n=1..5.

Mathematica

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

Prog

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

Crossrefs

Cf. A005808, A046867, A109076.

Sequence in context: A043130 A043910 A278329 * A134254 A089296 A089297

Adjacent sequences: A172410 A172411 A172412 * A172414 A172415 A172416

Keyword

nonn

Author

Matevz Markovic, Jun 30 2011

Status

approved