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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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
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
MATHEMATICA
Select[Range[1000], PrimeQ[451*2^# + 1] &]
CROSSREFS
Sequence in context: A058994 A198808 A249134 * A033165 A224676 A239147
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Jan 06 2019
EXTENSIONS
a(14)-a(15) from Jeppe Stig Nielsen, Jan 04 2020
STATUS
approved

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Last modified July 19 20:58 EDT 2024. Contains 374436 sequences. (Running on oeis4.)