Question

what is super numbers

Answer 1

An integer such that contains three consecutive 3s in its decimal representation is called a super-3 number. ... In general, a super- number is a number such that contains s in its decimal representation.

Answer 2

An integer such that  contains three consecutive 3s in its decimalrepresentation is called a super-3 number. The first few super-3 numbers are 261, 462, 471, 481, 558, 753, 1036, ... (OEIS A014569). A. Anderson has shown that all numbers ending in 471, 4710, or 47100 are super-3.