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.
| quinary (base 5) | 15 | 25 | 35 | 45 | 105 | 115 | 125 | 135 | 145 | 205 |
| senary (base 6) | 16 | 26 | 36 | 46 | 56 | 106 | 116 | 126 | 136 | 146 |
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 |
| quinary (base 5) | 15 | 25 | 35 | 45 | 105 | 115 | 125 | 135 | 145 | 205 |
| quinary (base 5) | 15 | 25 | 35 | 45 | 105 | 115 | 125 | 135 | 145 | 205 |
|---|---|---|---|---|---|---|---|---|---|---|
| senary (base 6) | 16 | 26 | 36 | 46 | 56 | 106 | 116 | 126 | 136 | 146 |