Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number.
base 22
base 22 is a positional numeral system with twenty-two as its base. It uses 22 different digits for representing numbers. The digits for base 22 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, h, i, j, k, and l.