A320339 Numbers k such that 483*2^k+1 is prime.

1, 2, 13, 14, 18, 21, 22, 26, 56, 73, 74, 121, 133, 169, 192, 193, 226, 242, 282, 346, 356, 416, 517, 812, 1653, 2458, 2468, 4492, 4994, 5648, 6498, 12188, 12741, 12973, 17026, 18421, 19112, 22918, 23017, 33796, 47288, 77054, 77638, 80998, 102157, 104204

Offset

1,2

Links

Jeppe Stig Nielsen, Table of n, a(n) for n = 1..56 (terms n = 1..55 from Robert Price)

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[483*2^# + 1] &]

Crossrefs

Sequence in context: A229908 A335972 A175270 * A075032 A032932 A089019

Adjacent sequences: A320336 A320337 A320338 * A320340 A320341 A320342

Keyword

nonn,hard

Author

Robert Price, Jan 07 2019

Status

approved