The folowing table expresses '1247' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR11 | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 10011011111 | 1000 | 1 | ||||||||
| 3 | 1201012 | 21,10 | 1 | ||||||||
| 4 | 103133 | 23,11 | 2 | ||||||||
| 5 | 14442 | 30 | 3 | ||||||||
| 6 | 5435 | 25,11 | 2 | ||||||||
| 7 | 3431 | 14 | 5 | ||||||||
| 8 | 2337 | 17,10 | 1 | ||||||||
| 9 | 1635 | 16 | 7 | ||||||||
| 10 | 1247 | 14 | 5 | ||||||||
| 11 | A34 | 16 | 7 | ||||||||
| 12 | 87B | 22 | 4 | ||||||||
| 13 | 74C | 1A | B | ||||||||
| 14 | 651 | C | |||||||||
| 15 | 582 | 10 | 1 | ||||||||
| 16 | 4DF | 20 | 2 |
Factors: 29 * 43