Unquadragesimal is a number system where the base is 41 and 11, 13, 17 and 19 are full repetend prime numbers. Full Repetend Prime Numbers: 3, 11, 13, 17, 19, 47, 53, 67, 89, 97, 149, 167, 179, 181, 193, 199, 211, 227, 229, 233, 239, 257, 263, 281, 293, 313, 317, 331, 347, 383, 421, 439, 457, 463, 479
