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A116224
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Numbers n such that n concatenated with n+9 gives the product of two numbers which differ by 9.
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3
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23, 27, 10357253, 10577583, 45531191, 45991881, 12823841629508531559818193, 17153953024599261169512903, 34319291138166088695725681, 41203057971387248588060861, 75861857890090990570762781
(list; graph; refs; listen; history; internal format)
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