101

This number is a prime.

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The only 3-digit prime such that the sum of each of its digits raised to itself is prime, i.e., 1^101+0^101+1^101 = 2 is prime. [Loungrides]

The largest prime with the smallest sum of digits. [Loungrides]

The first of 21 consecutive primes that remain primes if you eliminate their central digit. [Loungrides]