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A367561
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Numbers k such that k^7*2^k - 1 is a prime.
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1
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6, 45, 55, 80, 135, 187, 205, 384, 405, 1291, 1364, 2301, 2486, 2844, 16892, 27308, 30152, 32535, 45324, 71522, 72865
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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[3000], PrimeQ[#^7*2^# - 1] &] (* Amiram Eldar, Nov 23 2023 *)
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PROG
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(Magma) [k: k in [1..4000] | IsPrime(k^7*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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