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A032506
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Numbers k such that 259*2^k+1 is prime.
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0
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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[259*2^# + 1] & ] (* Robert Price, Dec 20 2018 *)
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PROG
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CROSSREFS
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KEYWORD
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hard,nonn,more
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AUTHOR
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EXTENSIONS
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a(6) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 20 2018
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STATUS
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approved
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