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A162713 Primes of the form 3^p-2^p-2 generated from primes p. 1
3, 17, 328256958598444055417, 127173474823342767533669605649 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(5) has 4816 digits.

LINKS

Table of n, a(n) for n=1..4.

MATHEMATICA

lst={}; Do[p=Prime[n]; If[PrimeQ[r=3^p - 2^p - 2], AppendTo[lst, r]], {n, 1000}]; lst (* Vincenzo Librandi, Sep 25 2015 *)

PROG

(MAGMA) [3^p-2^p-2: p in PrimesUpTo(4000) | IsPrime(3^p-2^p-2)]; // Vincenzo Librandi, Sep 25 2015

CROSSREFS

Cf. A162712 (associated p).

Sequence in context: A175984 A051710 A215913 * A161473 A208493 A082056

Adjacent sequences:  A162710 A162711 A162712 * A162714 A162715 A162716

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Jul 11 2009

EXTENSIONS

Edited by R. J. Mathar, Jul 26 2009

STATUS

approved

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Last modified July 5 23:36 EDT 2020. Contains 335475 sequences. (Running on oeis4.)