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 A323005 Numbers k such that 361*2^k+1 is prime. 0
 28, 36, 100, 312, 568, 2584, 9144, 37284, 96720, 105132, 147084, 222292, 280728, 292600, 1459308, 2312832, 2424232 (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 MATHEMATICA Select[Range[1000], PrimeQ[361*2^# + 1] &] (* Robert Price, Jan 01 2019 *) CROSSREFS Sequence in context: A359529 A105710 A192226 * A080983 A179105 A096430 Adjacent sequences: A323002 A323003 A323004 * A323006 A323007 A323008 KEYWORD nonn,more,hard AUTHOR Robert Price, Jan 01 2019 EXTENSIONS a(16)-a(17) from Jeppe Stig Nielsen, Jan 04 2020 STATUS approved

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Last modified December 8 11:39 EST 2023. Contains 367678 sequences. (Running on oeis4.)