The duodecimal system (also known as base 12 or dozenal) is a positional notation numeral system using twelve as its base.
base 14
base 14 is a positional numeral system with fourteen as its base. It uses 14 different digits for representing numbers. The digits for base 14 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, and d.