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A319486
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Numbers k such that 475*2^k+1 is prime.
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0
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2, 26, 38, 100, 340, 686, 2062, 2786, 26698, 40330, 377668, 447826, 759412, 1269578, 2403220
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[1000], PrimeQ[475*2^# + 1] &]
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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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