The folowing table expresses '658' 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 | 1010010010 | 100 | 1 | |||||||
| 3 | 220101 | 20 | 2 | |||||||
| 4 | 22102 | 13,10 | 1 | |||||||
| 5 | 10113 | 11 | 2 | |||||||
| 6 | 3014 | 12 | 3 | |||||||
| 7 | 1630 | 13 | 4 | |||||||
| 8 | 1222 | 7 | ||||||||
| 9 | 811 | 11 | 2 | |||||||
| 10 | 658 | 19,10 | 1 | |||||||
| 11 | 549 | 17 | 8 | |||||||
| 12 | 46A | 18 | 9 | |||||||
| 13 | 3B8 | 19 | A | |||||||
| 14 | 350 | 8 | ||||||||
| 15 | 2DD | 1D | E | |||||||
| 16 | 292 | D |
Factors: 2 * 7 * 47