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A068187
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a(n) is the smallest number such that the product of its decimal digits equals n^n, or 0 if no solutions exist.
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8
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1, 4, 39, 488, 55555, 88999, 7777777, 88888888, 999999999, 25555555555888, 0, 88888888999999, 0, 4777777777777778888, 35555555555555559999999, 2888888888888888888888, 0, 888888999999999999999999, 0
(list; graph; refs; listen; history; internal format)
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