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A050841
Numbers n such that 179*2^n-1 is prime.
0
8, 68, 108, 20780, 25488, 25656, 38684, 57096, 159108, 236856, 490800, 507816
OFFSET
1,1
PROG
(PARI) is(n)=ispseudoprime(179*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A304073 A250258 A192091 * A208947 A296670 A263477
KEYWORD
hard,nonn
AUTHOR
N. J. A. Sloane, Dec 29 1999
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
STATUS
approved