A318194 Numbers k such that 467*2^k+1 is prime.

19, 247, 547, 1783, 3475, 10987, 23599, 266899, 387139, 785695, 2085835, 2749195

Offset

1,1

Links

Table of n, a(n) for n=1..12.

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[467*2^# + 1] &]

Crossrefs

Sequence in context: A019512 A025927 A224180 * A019443 A021229 A021464

Adjacent sequences: A318191 A318192 A318193 * A318195 A318196 A318197

Keyword

nonn,more,hard

Author

Robert Price, Jan 07 2019

Extensions

a(11)-a(12) from Jeppe Stig Nielsen, Jan 04 2020

Status

approved