The folowing table expresses '290' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|
| 2 | 100100010 | 11,10 | 1 | ||||||
| 3 | 101202 | 20 | 2 | ||||||
| 4 | 10202 | 11 | 2 | ||||||
| 5 | 2130 | 11 | 2 | ||||||
| 6 | 1202 | 5 | |||||||
| 7 | 563 | 20 | 2 | ||||||
| 8 | 442 | 12 | 3 | ||||||
| 9 | 352 | 11 | 2 | ||||||
| 10 | 290 | 11 | 2 | ||||||
| 11 | 244 | A | |||||||
| 12 | 202 | 4 | |||||||
| 13 | 194 | 11 | 2 | ||||||
| 14 | 16A | 13 | 4 | ||||||
| 15 | 145 | A | |||||||
| 16 | 122 | 5 |
Factors: 2 * 5 * 29