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A172413 Positive numbers n such that 11^n + n + 1 is prime. 0
1, 29, 35, 1309, 84379 (list; graph; refs; listen; history; text; internal format)
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

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Last modified October 15 01:40 EDT 2019. Contains 328025 sequences. (Running on oeis4.)