The folowing table expresses '630' 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 | 1001110110 | 110 | 10 | 1 | ||||||
| 3 | 212100 | 20 | 2 | |||||||
| 4 | 21312 | 21 | 3 | |||||||
| 5 | 10010 | 2 | ||||||||
| 6 | 2530 | 14 | 5 | |||||||
| 7 | 1560 | 15 | 6 | |||||||
| 8 | 1166 | 16 | 7 | |||||||
| 9 | 770 | 15 | 6 | |||||||
| 10 | 630 | 9 | ||||||||
| 11 | 523 | A | ||||||||
| 12 | 446 | 12 | 3 | |||||||
| 13 | 396 | 15 | 6 | |||||||
| 14 | 330 | 6 | ||||||||
| 15 | 2C0 | E | ||||||||
| 16 | 276 | F |
Factors: 2 * 32 * 5 * 7
630 is the sum of the counting numbers from 1 to 35 (See 'The Sum/Product of the First N Counting Numbers').