A032386 Numbers k such that 73*2^k+1 is prime.

2, 6, 14, 24, 30, 32, 42, 44, 60, 110, 212, 230, 1892, 1974, 2210, 3596, 4842, 6282, 7184, 7304, 10614, 20460, 30830, 31970, 36156, 65826, 82926, 91496, 171854, 227334, 1370742, 1834526, 2048754, 2071592, 2075936

Offset

1,1

Links

Table of n, a(n) for n=1..35.

Ray Ballinger, Proth Search Page

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

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

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

Prog

(PARI) is(n)=ispseudoprime(73*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Sequence in context: A016060 A307643 A239877 * A074329 A109592 A238410

Adjacent sequences: A032383 A032384 A032385 * A032387 A032388 A032389

Keyword

nonn

Author

James R. Buddenhagen

Extensions

More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013

a(33)-a(35) from http://www.prothsearch.com/riesel1.html by Robert Price, Dec 14 2018

Status

approved