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A014120
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Smallest number of persistence n over product-of-nonzero-digits function.
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11
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0, 10, 25, 39, 77, 679, 6788, 68889, 2677889, 26888999, 3778888999, 267777777889999, 77777777788888888888899999, 37777777777777777777777777778888889999999999999999999
(list; graph; refs; listen; history; internal format)
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