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A137653
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Numbers k such that 12^k + 7 is prime.
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2
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1, 2, 4, 5, 6, 20, 21, 22, 28, 58, 120, 144, 1100, 1926, 2892, 4773, 5214, 17241, 18980, 31265
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Do[If[PrimeQ[(12^n+7)], Print[n]], {n, 2000}]
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PROG
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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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