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A032379
Numbers k such that 59*2^k+1 is prime.
0
5, 11, 27, 35, 291, 1085, 2685, 9195, 15995, 22455, 29115, 34437, 54759, 93939, 167907, 232607, 308771, 423197, 608687, 727815, 1170231
OFFSET
1,1
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
KEYWORD
nonn,hard
EXTENSIONS
More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013
STATUS
approved