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A050868
Numbers k such that 233*2^k-1 is prime.
0
4, 10, 12, 22, 24, 34, 48, 60, 100, 562, 574, 640, 838, 852, 2002, 4198, 4932, 5860, 10492, 13834, 17398, 25944, 133030, 179992
OFFSET
1,1
PROG
(PARI) is(n)=ispseudoprime(233*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A310346 A080285 A138628 * A007319 A352213 A175436
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