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nude n.  and  oban n.

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(max 15 digits)

First numbers that belong to both sets:

3, 5, 6, 7, 8, 9, 11, 12, 15, 33, 36, 55, 66, 77, 88, 99, 312, 315, 333, 336, 366, 396, 515, 555, 612, 636, 666, 728, 735, 777, 816, 888, 936, 999.