A032460 - OEIS

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A032460

Numbers n such that 167*2^n+1 is prime.

2

7, 103, 151, 247, 10183, 55447

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

Ray Ballinger, Proth Search Page

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

PROG

(PARI) is(n)=ispseudoprime(167*2^n+1) \\ Charles R Greathouse IV, May 22 2017

CROSSREFS

Sequence in context: A223239 A140633 A142400 * A267234 A246914 A274670

Adjacent sequences: A032457 A032458 A032459 * A032461 A032462 A032463

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane.

STATUS

approved