The On-Line Encyclopedia of Integer Sequences (OEIS)

A032459 revision #20

A032459

Numbers k such that 165*2^k+1 is prime.

1, 2, 3, 5, 7, 9, 12, 17, 25, 33, 39, 43, 51, 65, 71, 72, 84, 100, 104, 168, 198, 264, 282, 293, 352, 379, 611, 676, 719, 729, 745, 1013, 1407, 1417, 1532, 1887, 1902, 1993, 2137, 2294, 2381, 2509, 3259, 4224, 4713, 5719, 6613, 7515, 8575, 8935, 11598, 12500

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Robert Price, Table of n, a(n) for n = 1..101

Ray Ballinger, Proth Search Page

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

MATHEMATICA

Select[Range[1000], PrimeQ[165*2^# + 1] & ] (* Robert Price, Dec 18 2018 *)

PROG