The senary numeral system (also known as base-6 or heximal) has six as its base. It has been adopted independently by a small number of cultures. Like decimal, it is a semiprime, though being the product of the only two consecutive numbers that are both prime (2 and 3) it has a high degree of mathematical properties for its size. As six is a superior highly composite number, many of the arguments made in favor of the duodecimal system also apply to this base-6.
| senary (base 6) | 16 | 26 | 36 | 46 | 56 | 106 | 116 | 126 | 136 | 146 |
| hexadecimal (base 16) | 116 | 216 | 316 | 416 | 516 | 616 | 716 | 816 | 916 | a16 |
In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a, b, c, d, e, f) to represent values ten to fifteen.
| hexadecimal (base 16) | 116 | 216 | 316 | 416 | 516 | 616 | 716 | 816 | 916 | a16 |
| senary (base 6) | 16 | 26 | 36 | 46 | 56 | 106 | 116 | 126 | 136 | 146 |
| senary (base 6) | 16 | 26 | 36 | 46 | 56 | 106 | 116 | 126 | 136 | 146 |
|---|---|---|---|---|---|---|---|---|---|---|
| hexadecimal (base 16) | 116 | 216 | 316 | 416 | 516 | 616 | 716 | 816 | 916 | a16 |