The folowing table expresses '647' 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 | 1010000111 | 101 | 10 | 1 | ||||||
| 3 | 212222 | 102 | 10 | 1 | ||||||
| 4 | 22013 | 20 | 2 | |||||||
| 5 | 10042 | 12 | 3 | |||||||
| 6 | 2555 | 25,11 | 2 | |||||||
| 7 | 1613 | 14 | 5 | |||||||
| 8 | 1207 | 12 | 3 | |||||||
| 9 | 788 | 25 | 7 | |||||||
| 10 | 647 | 17 | 8 | |||||||
| 11 | 539 | 16 | 7 | |||||||
| 12 | 45B | 18 | 9 | |||||||
| 13 | 3AA | 1A | B | |||||||
| 14 | 343 | A | ||||||||
| 15 | 2D2 | 12 | 3 | |||||||
| 16 | 287 | 11 | 2 |
Factors: Prime