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# 112

This number is a composite.

112 = 2^{4} * 7. Note that 7^{4} - 2 is prime. [Luhn]

The only 3-digit number such that its factorial raised to the sum of its digits and increased by one is prime. I.e., 112!^(1+1+2)+1 is prime. [Opao]

112!*211! - 1 is prime. [Firoozbakht]

The smallest multi-digit composite nude number whose the reversal is prime. (A nude number is a number that is divisible by all of its digits). [Loungrides]

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

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