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A323002
Numbers k such that 355*2^k+1 is prime.
0
6, 12, 24, 34, 46, 138, 174, 816, 1164, 1668, 1704, 5334, 10126, 11340, 13818, 18564, 82968, 202986, 241368, 285492, 1482390
OFFSET
1,1
MATHEMATICA
Select[Range[1000], PrimeQ[355*2^# + 1] &] (* Robert Price, Jan 01 2019 *)
CROSSREFS
Sequence in context: A263849 A227416 A106697 * A249127 A277336 A140522
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Jan 01 2019
STATUS
approved