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A100407
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Numbers k such that k^k+2 is prime.
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6
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OFFSET
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1,2
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COMMENTS
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All terms are odd. Next term is greater than 3500. 1349^1349+2 is a probable prime with length 4223.
The next term, if it exists, is greater than 50000. - Hugo Pfoertner, Jun 28 2019
The next term, if it exists, is greater than 430000. - Ryan Propper, Dec 15 2023
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LINKS
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EXAMPLE
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737 is in the sequence because 737^737+2 is prime.
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MATHEMATICA
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Do[If[PrimeQ[n^n+2], Print[n]], {n, 3500}]
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PROG
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CROSSREFS
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KEYWORD
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more,nonn,hard
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AUTHOR
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STATUS
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approved
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