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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
OFFSET
1,2
MATHEMATICA
Select[Range[1000], PrimeQ[371*2^# + 1] &] (* Robert Price, Jan 01 2019 *)
CROSSREFS
Sequence in context: A353003 A124076 A153834 * A153707 A232327 A153708
KEYWORD
nonn,hard
AUTHOR
Robert Price, Jan 01 2019
STATUS
approved