187

This number is a composite.

+ The 187th prime , i.e., 1117, can be written as the concatenation of the prime factors of 187. Are there other such cases? [Capelle]

+ 187^(1*8*7)+1+8+7 is prime. This is the smallest three-digit non-zero number with this property. There are only two such numbers, the other being 232. [Opao]

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

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