A322935 Numbers k such that 383*2^k+1 is prime.

6393, 23265, 84057, 1164513, 3309321

Offset

1,1

Links

Table of n, a(n) for n=1..5.

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[383*2^# + 1] &]

Crossrefs

Sequence in context: A251406 A278187 A206125 * A253825 A186068 A186064

Adjacent sequences: A322932 A322933 A322934 * A322936 A322937 A322938

Keyword

nonn,more,hard

Author

Robert Price, Jan 03 2019

Extensions

a(5) from Jeppe Stig Nielsen, Dec 18 2024

Status

approved