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 A323007 Numbers k such that 365*2^k+1 is prime. 0
 5, 11, 19, 63, 93, 95, 103, 147, 275, 293, 539, 623, 1115, 1181, 1691, 1811, 2711, 2919, 3467, 4067, 5115, 5815, 6279, 7877, 8831, 18717, 24399, 25125, 27199, 32823, 122075, 162789, 276735, 561783, 586189, 1577413, 2355607, 2494991 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..38. 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[365*2^# + 1] &] (* Robert Price, Jan 01 2019 *) CROSSREFS Sequence in context: A045452 A152085 A267603 * A370682 A297365 A128927 Adjacent sequences: A323004 A323005 A323006 * A323008 A323009 A323010 KEYWORD nonn,more,hard AUTHOR Robert Price, Jan 01 2019 EXTENSIONS a(37)-a(38) from Jeppe Stig Nielsen, Jan 04 2020 STATUS approved

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Last modified May 28 12:54 EDT 2024. Contains 372913 sequences. (Running on oeis4.)