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A323004
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Numbers k such that 359*2^k+1 is prime.
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0
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1, 5, 7, 9, 47, 55, 65, 69, 97, 103, 273, 1231, 1721, 2277, 3981, 4125, 4569, 5135, 8327, 8593, 24249, 37609, 396617, 633247, 920709, 2165551, 2870935
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[Range[1000], PrimeQ[359*2^# + 1] &] (* Robert Price, Jan 01 2019 *)
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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