The mathematician's numerology: What's special about this number? (link from
A few gems:
93 = 333 in base 5.
111 is the smallest possible magic constant of a 3 x 3 magic square of distinct primes.
145 = 1! + 4! + 5!
197 is a Keith number.
226 is the first number he doesn't have anything for.
384 = 8!!
666 is a palindromic triangular number.
668 is the number of legal pawn moves in chess.