A122718 Convenience store primes or prime of the form abs(7^n - 2^11).

353, 1999, 14759, 115601, 40351559, 558545864083281959, 44567640326363195900190045974565959, 88124787089723195184393736687912818113309153, 10367793076318844190248738727596255138212949484401

Offset

1,1

Comments

The next term (a(10)) has 100 digits. - Harvey P. Dale, Aug 31 2017

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..17

C. Pomerance, Science News reference.

Mathematica

With[{c=2^11}, Select[Abs[7^Range[0, 100]-c], PrimeQ]]//Sort (* Harvey P. Dale, Aug 31 2017 *)

Prog

(PARI) g(n) = for(x=1, n, y=abs(7^x-2^11); if(ispseudoprime(y), print1(y", ")))

Crossrefs

Sequence in context: A142785 A259958 A126657 * A300364 A098678 A056216

Adjacent sequences: A122715 A122716 A122717 * A122719 A122720 A122721

Keyword

nonn

Author

Cino Hilliard, Sep 23 2006

Extensions

One additional term (a(9)) from Harvey P. Dale, Aug 31 2017

Status

approved