A323195 - OEIS

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A323195

Numbers k such that 451*2^k+1 is prime.

0

12, 24, 4128, 6444, 6740, 49344, 66300, 72468, 186740, 282540, 512076, 976320, 1316832, 2124636, 2323952

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

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[451*2^# + 1] &]

CROSSREFS

Sequence in context: A058994 A198808 A249134 * A033165 A224676 A239147

Adjacent sequences: A323192 A323193 A323194 * A323196 A323197 A323198

KEYWORD

nonn,more,hard

AUTHOR

Robert Price, Jan 06 2019

EXTENSIONS

a(14)-a(15) from Jeppe Stig Nielsen, Jan 04 2020

STATUS

approved