A323008 Numbers k such that 367*2^k+1 is prime.

12, 48, 72, 84, 228, 306, 360, 404, 524, 1062, 1992, 4320, 4460, 9396, 10832, 15834, 43500, 117828, 142760, 204360, 251898, 693348, 713484, 1103912, 3004536, 3712952

Offset

1,1

Links

Table of n, a(n) for n=1..26.

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600

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

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

Eric Weisstein's World of Mathematics, Proth Prime

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

Mathematica

Select[Range[1000], PrimeQ[367*2^# + 1] &] (* Robert Price, Jan 01 2019 *)

Crossrefs

Sequence in context: A118903 A324747 A044114 * A371599 A379716 A044495

Adjacent sequences: A323005 A323006 A323007 * A323009 A323010 A323011

Keyword

nonn,more,hard,changed

Author

Robert Price, Jan 01 2019

Extensions

a(25)-a(26) from Jeppe Stig Nielsen, Dec 20 2024

Status

approved