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A125885
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Numbers k for which k^7+k^6-1 is prime.
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15
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2, 4, 12, 17, 27, 39, 45, 46, 72, 94, 105, 106, 122, 126, 147, 149, 151, 156, 160, 161, 166, 169, 171, 172, 192, 194, 204, 205, 209, 230, 235, 242, 252, 260, 264, 266, 276, 280, 285, 306, 309, 319, 330, 335, 357, 371, 387, 400, 402, 411, 422, 439, 442, 451, 459
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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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Do[If[PrimeQ[x^7 + x^6 - 1], Print[x]], {x, 1, 200}]
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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