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A116114
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Numbers n such that n concatenated with n-7 gives the product of two numbers which differ by 9.
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4
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13, 493, 607, 629, 757, 17927, 33247, 93869, 19467217, 31223879, 72757727, 13454739732766891651472740499, 40093333713615672956030023507, 48089152118689474641229584727, 66424317743191484432891678269
(list; graph; refs; listen; history; internal format)
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