Quinary (base-5 or pental) is a numeral system with five as the base. A possible origination of a quinary system is that there are five fingers on either hand.
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.