The folowing table expresses '1681' 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 | 11010010001 | 101 | 10 | 1 | |||||||
| 3 | 2022021 | 100 | 1 | ||||||||
| 4 | 122101 | 13,10 | 1 | ||||||||
| 5 | 23211 | 14,10 | 1 | ||||||||
| 6 | 11441 | 15,10 | 1 | ||||||||
| 7 | 4621 | 16,10 | 1 | ||||||||
| 8 | 3221 | 10 | 1 | ||||||||
| 9 | 2267 | 18,10 | 1 | ||||||||
| 10 | 1681 | 16 | 7 | ||||||||
| 11 | 1299 | 1A,10 | 1 | ||||||||
| 12 | B81 | 18 | 9 | ||||||||
| 13 | 9C4 | 1C,10 | 1 | ||||||||
| 14 | 881 | 13 | 4 | ||||||||
| 15 | 771 | 10 | 1 | ||||||||
| 16 | 691 | 10 | 1 |
Factors: 412