107

This number is a prime.

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The smallest safe prime that is an emirp. [Loungrides]

The smallest emirp that does not produce a prime by adding a digit to it. (There is no prime "107d"). [Loungrides]

2^107*107!-1 is the largest non-titanic prime of form 2^p*p!-1 where p is a prime. This says that the product of first 107 positive even numbers minus 1 is prime, i.e., 2*4*6*...*210*212*214-1. [Loungrides]

(107, 1439) is the first pair of emirps of form (p-666, p+666), (case p=773), i.e., 773 is a beastly cousins prime. [Loungrides]