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A050596
Numbers n such that 141*2^n-1 is prime.
0
1, 2, 7, 10, 11, 13, 38, 46, 61, 170, 299, 445, 815, 983, 4237, 6146, 7255, 7459, 7585, 8411, 8647, 14855, 20338, 21671, 29293, 89318, 92498, 98686, 121142, 250271, 619742
OFFSET
1,2
PROG
(PARI) is(n)=ispseudoprime(141*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A043357 A023730 A045281 * A045266 A108493 A069494
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