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A367572
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Numbers k such that k^8*2^k - 1 is a prime.
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0
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5, 7, 49, 165, 251, 345, 385, 945, 949, 1001, 1963, 2113, 2249, 3751, 4381, 4911, 5133, 10039, 29693, 34901, 73885
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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[5000], PrimeQ[#^8*2^# - 1] &] (* Amiram Eldar, Nov 23 2023 *)
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PROG
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(Magma) [k: k in [1..4000] | IsPrime(k^8*2^k-1)];
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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