A323010 Numbers k such that 371*2^k+1 is prime.

1, 3, 23, 27, 39, 41, 97, 101, 123, 183, 201, 311, 411, 519, 551, 557, 867, 1583, 1607, 2007, 2207, 2213, 5999, 8253, 15573, 23163, 29939, 36371, 40403, 61977, 126861, 127419, 267911, 299159, 341511, 367439, 373847, 614517, 665639, 1099061, 1475337, 1559073

Offset

1,2

Links

Jeppe Stig Nielsen, Table of n, a(n) for n = 1..44

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[371*2^# + 1] &] (* Robert Price, Jan 01 2019 *)

Crossrefs

Sequence in context: A353003 A124076 A153834 * A153707 A232327 A153708

Adjacent sequences: A323007 A323008 A323009 * A323011 A323012 A323013

Keyword

nonn,hard

Author

Robert Price, Jan 01 2019

Status

approved