104

This number is a composite.

+ 104 = 13 x 23. Note that (13 - 23)3 - 13 - 23 = 104. [Sladcik]

+ The smallest abundant number, non-ending with zero, whose the reversal is prime. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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