A032379 Numbers k such that 59*2^k+1 is prime.

5, 11, 27, 35, 291, 1085, 2685, 9195, 15995, 22455, 29115, 34437, 54759, 93939, 167907, 232607, 308771, 423197, 608687, 727815, 1170231

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

Prog

(PARI) is(n)=ispseudoprime(59*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A274681 A287350 A294091 * A152535 A042423 A356351

Adjacent sequences: A032376 A032377 A032378 * A032380 A032381 A032382

Keyword

nonn,hard

Author

James R. Buddenhagen

Extensions

More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013

Status

approved