👉 In mathematics, a concubinary number is a binary representation of an integer that uses only 2's and 3's. This means that each digit in the binary form represents one of two or three different digits from 0 to 9. For example, the binary representation of 17 (which is 1011) would be represented as "111" since it uses all 2's. In other words, a concubinary number can be defined as
