This number is a prime.

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+ The smallest emirp whose product of digits is a perfect number. [Loungrides]

+ The only emirp concatenated from two double-digit numbers that are sides in an equable triangle, i.e., (5, 12, 13). (A shape is called equable if its area equals the perimeter). [Loungrides]

(There are 2 curios for this number that have not yet been approved by an editor.)

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