A174364 Primes p such that 2*p^3-+15 are also prime.

11, 163, 449, 1103, 1367, 1627, 3037, 3089, 3517, 3529, 4639, 4903, 5897, 6661, 8377, 8951, 9787, 11329, 11981, 13697, 14783, 15017, 16447, 16993, 17609, 19597, 20509, 21799, 21881, 22157, 25537, 25693, 25903, 26119, 26189, 26947, 27917, 27961

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Example

For p^11, 2*11^3-+15=(2647,2677); p=163, 2*163^3-+15=(8661479,8661509).

Mathematica

Select[Prime[Range[4000]], And@@PrimeQ[2 #^3 + {15, -15}]&] (* Vincenzo Librandi, Apr 10 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(100000)|IsPrime(2*p^3-15) and IsPrime(2*p^3+15)]

Crossrefs

Sequence in context: A205086 A370911 A141876 * A229963 A051619 A261504

Adjacent sequences: A174361 A174362 A174363 * A174365 A174366 A174367

Keyword

nonn,easy

Author

Vincenzo Librandi, Mar 17 2010

Status

approved