24046

This number is a composite.

The smallest number q such that each member of the set {q-3, q, q+3} is a probable prime to base 3. It is an even pseudoprime to base 3, located at the midpoint of a sexy prime pair {q-3, q+3}. There are only 3 such numbers < 10^10: q1 = 24046, q2 = 10123366, q3 = 12304774; q1 divides q2. [Yosei]