A144242 Prime numbers of the form 8^k +- 7.

71, 262151, 1073741831, 549755813881, 302231454903657293676551, 85070591730234615865843651857942052871, 23945242826029513411849172299223580994042798784118791, 25711008708143844408671393477458601640355247900524685364822023

Offset: 1

Author

Reikku Kulon, Sep 15 2008

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..14

Crossrefs

Cf. A000040, A000668, A104066, A144231, A144232, A144233, A144234, A144236.

Programs

Mathematica

Select[Sort[Flatten[Table[8^k+{7,-7},{k,90}]]],PrimeQ] (* Harvey P. Dale, Aug 08 2016 *)

Extensions

a(8) from Amiram Eldar, Jul 24 2025