Here is a nice mathematical exercise from Programming Praxis. Is about finding the “narcissistic numbers”, *n* digit numbers numbers where the sum of all the *n*th* *power of their digits is equal to the number.

To reduce the problem a little, I decided to start by limiting the number of digits. So, the first approach will be just calculate if a number is narcissistic of not. So, after checking it and making a couple of performance adjustments, the code is as follows…

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