The folowing table expresses '999' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 1111100111 | 1000 | 1 | |||||||
| 3 | 1101000 | 10 | 1 | |||||||
| 4 | 33213 | 30 | 3 | |||||||
| 5 | 12444 | 30 | 3 | |||||||
| 6 | 4343 | 22 | 4 | |||||||
| 7 | 2625 | 21 | 3 | |||||||
| 8 | 1747 | 23 | 5 | |||||||
| 9 | 1330 | 7 | ||||||||
| 10 | 999 | 27 | 9 | |||||||
| 11 | 829 | 18 | 9 | |||||||
| 12 | 6B3 | 18 | 9 | |||||||
| 13 | 5BB | 21 | 3 | |||||||
| 14 | 515 | B | ||||||||
| 15 | 469 | 14 | 5 | |||||||
| 16 | 3E7 | 18 | 9 |
Factors: 33 * 37