The folowing table expresses '686' 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 | 1010101110 | 110 | 10 | 1 | ||||||
| 3 | 221102 | 22,11 | 2 | |||||||
| 4 | 22232 | 23,11 | 2 | |||||||
| 5 | 10221 | 11 | 2 | |||||||
| 6 | 3102 | 10 | 1 | |||||||
| 7 | 2000 | 2 | ||||||||
| 8 | 1256 | 16 | 7 | |||||||
| 9 | 842 | 15 | 6 | |||||||
| 10 | 686 | 20 | 2 | |||||||
| 11 | 574 | 15 | 6 | |||||||
| 12 | 492 | 13 | 4 | |||||||
| 13 | 40A | 11 | 2 | |||||||
| 14 | 370 | A | ||||||||
| 15 | 30B | E | ||||||||
| 16 | 2AE | 1A | B |
Factors: 2 * 73