72253

This number is a prime.

The smallest prime with all the prime digits that belongs both to an emirp pair (35227, 72253) and to a twin prime pair (72251, 72253) as the larger member. [Beedassy]

The smallest emirp with all the prime digits whose ternary (base 3) representation (10200010001) is prime, when read as decimal number. [Bajpai]