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 A323010 Numbers k such that 371*2^k+1 is prime. 1
 1, 3, 23, 27, 39, 41, 97, 101, 123, 183, 201, 311, 411, 519, 551, 557, 867, 1583, 1607, 2007, 2207, 2213, 5999, 8253, 15573, 23163, 29939, 36371, 40403, 61977, 126861, 127419, 267911, 299159, 341511, 367439, 373847, 614517, 665639, 1099061, 1475337, 1559073 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Jeppe Stig Nielsen, Table of n, a(n) for n = 1..44 Ray Ballinger, Proth Search Page Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600 Wilfrid Keller, List of primes k.2^n - 1 for k < 300 Eric Weisstein's World of Mathematics, Proth Prime MATHEMATICA Select[Range[1000], PrimeQ[371*2^# + 1] &] (* Robert Price, Jan 01 2019 *) CROSSREFS Sequence in context: A178177 A124076 A153834 * A153707 A232327 A153708 Adjacent sequences:  A323007 A323008 A323009 * A323011 A323012 A323013 KEYWORD nonn,hard AUTHOR Robert Price, Jan 01 2019 STATUS approved

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Last modified July 25 13:59 EDT 2021. Contains 346290 sequences. (Running on oeis4.)