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A318195 Numbers k such that 469*2^k+1 is prime. 0
2, 190, 242, 326, 1562, 31430, 43666, 497206, 504610 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

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[469*2^# + 1] &]

CROSSREFS

Sequence in context: A053936 A252765 A172801 * A307587 A235680 A085937

Adjacent sequences:  A318192 A318193 A318194 * A318196 A318197 A318198

KEYWORD

nonn,more,hard

AUTHOR

Robert Price, Jan 07 2019

STATUS

approved

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Last modified October 22 06:54 EDT 2019. Contains 328315 sequences. (Running on oeis4.)