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 A322951 Numbers k such that 319*2^k+1 is prime. 0
 2, 10, 18, 274, 314, 522, 562, 578, 594, 602, 930, 1074, 23826, 184554, 1923378, 2248914, 2290722 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..17. 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 MAPLE select(n->isprime(319*2^n+1), [\$1..1000]); # Muniru A Asiru, Dec 31 2018 MATHEMATICA Select[Range[1000], PrimeQ[319*2^# + 1] &] (* Robert Price, Dec 31 2018 *) CROSSREFS Cf. A002255, A050527. Sequence in context: A346551 A180591 A330083 * A156446 A032685 A085936 Adjacent sequences: A322948 A322949 A322950 * A322952 A322953 A322954 KEYWORD nonn,more,hard AUTHOR Robert Price, Dec 31 2018 EXTENSIONS a(16)-a(17) from Jeppe Stig Nielsen, Feb 25 2020 STATUS approved

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Last modified May 31 13:08 EDT 2023. Contains 363066 sequences. (Running on oeis4.)