Septemvigesimal
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A Septemvigesimal numeral system has a base of twenty-seven. (An alternative name could be Hepticosamal.)
Septemvigesimal notation can be used as a concise representation of ternary data, where each septemvigesimal digit represents three ternary digits. This is similar to using octal notation to represent binary data, though the digit set is closer in size to hexadecimal.
Examples: (Digits 10-26 are represented by letters A through Q.)
| Decimal | Ternary | Septemvigesimal |
|---|---|---|
| 0 | 000 | 0 |
| 1 | 001 | 1 |
| 2 | 002 | 2 |
| 3 | 010 | 3 |
| 5 | 012 | 5 |
| 10 | 101 | A |
| 15 | 120 | F |
| 20 | 202 | K |
| 25 | 221 | P |
| 26 | 222 | Q |
| 27 | 1000 | 10 |
| 81 | 10000 | 30 |
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