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A216420
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Numbers k such that 13^k + k^13 - 1 is prime.
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1
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Range[0, 5000], PrimeQ[13^# + #^13 - 1] &]
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PROG
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(Magma) [n: n in [0..1000] | IsPrime(13^n+n^13-1)];
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CROSSREFS
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KEYWORD
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nonn,hard,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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