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A322954 Numbers k such that 323*2^k+1 is prime. 0
1, 5, 145, 329, 381, 465, 3121, 4201, 4309, 12669, 13601, 17221, 33601, 41741, 46921, 65745, 80269, 384685, 1072285 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600
Eric Weisstein's World of Mathematics, Proth Prime
MAPLE
select(n->isprime(323*2^n+1), [$1..1000]); # Muniru A Asiru, Dec 31 2018
MATHEMATICA
Select[Range[1000], PrimeQ[323*2^# + 1] &] (* Robert Price, Dec 31 2018 *)
CROSSREFS
Sequence in context: A168041 A081322 A232986 * A254711 A273920 A076218
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Dec 31 2018
STATUS
approved

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Last modified June 17 07:23 EDT 2024. Contains 373433 sequences. (Running on oeis4.)