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A138050
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Numbers k such that 23^k + 2 is prime.
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7
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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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Do[ f = 23^n + 2; If[ PrimeQ[ f ], Print[ {n, f} ] ], {n, 1, 323} ]
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PROG
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CROSSREFS
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Cf. A051783 (k such that 3^k + 2 is prime).
Cf. A087885 (k such that 5^k + 2 is prime).
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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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