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A050838
Numbers n such that 173*2^n-1 is prime.
0
2, 4, 6, 16, 32, 50, 76, 80, 96, 104, 162, 212, 230, 260, 480, 612, 1044, 1440, 1910, 2488, 3140, 3628, 5284, 6332, 7494, 9762, 27100, 29632, 37732, 44036, 47284, 65970, 116870, 145956, 360004, 409470, 483932, 632000, 828808
OFFSET
1,1
PROG
(PARI) is(n)=ispseudoprime(173*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A128092 A167569 A032503 * A374512 A271842 A261864
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