A050585 - OEIS

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A050585

Numbers n such that 119*2^n-1 is prime.

0

12, 16, 52, 160, 192, 216, 376, 436, 266136, 401552

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

Kosmaj, Riesel list k<300.

PROG

(PARI) is(n)=ispseudoprime(119*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A341297 A323978 A219390 * A050555 A060669 A166644

Adjacent sequences: A050582 A050583 A050584 * A050586 A050587 A050588

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