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A320339 Numbers k such that 483*2^k+1 is prime. 1
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 (list; graph; refs; listen; history; text; internal format)
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: A153651 A229908 A335972 * A075032 A032932 A089019

Adjacent sequences:  A320336 A320337 A320338 * A320340 A320341 A320342

KEYWORD

nonn,hard

AUTHOR

Robert Price, Jan 07 2019

STATUS

approved

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Last modified December 8 11:53 EST 2021. Contains 349596 sequences. (Running on oeis4.)