A156110 Primes p such that p+18 and p+72 are both prime.

11, 29, 41, 79, 109, 139, 179, 211, 239, 349, 431, 449, 491, 569, 601, 701, 739, 751, 809, 811, 839, 911, 919, 991, 1021, 1031, 1051, 1091, 1231, 1289, 1301, 1381, 1409, 1471, 1481, 1549, 1759, 1861, 1931, 2011, 2069, 2081, 2221, 2269, 2339, 2459, 2521

Offset: 1

Author

Vincenzo Librandi, Feb 08 2009

Keywords

• nonn
• easy

Comments

A153418 INTERSECT A156105. [Bruno Berselli, Nov 01 2012]

Links

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

Crossrefs

Cf. A153418, A156105.

Programs

Magma

[p: p in PrimesUpTo(3000)|IsPrime(p + 18) and IsPrime (p + 72)]; // Vincenzo Librandi, Oct 31 2012

Mathematica

Select[Prime[Range[3000]], And @@ PrimeQ[{# + 18, # + 72}]&] (* Vincenzo Librandi, Oct 31 2012 *)