A050843 Numbers n such that 183*2^n-1 is prime.

4, 11, 22, 31, 52, 56, 59, 67, 88, 104, 251, 572, 724, 1379, 2696, 3616, 3928, 8518, 9239, 9419, 10547, 20396, 42136, 43936, 69422, 313127, 330275, 358568, 411974

Offset

1,1

Links

Table of n, a(n) for n=1..29.

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(183*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A338969 A318180 A301115 * A360039 A301152 A301083

Adjacent sequences: A050840 A050841 A050842 * A050844 A050845 A050846

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