The folowing table expresses '289' 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 | 100100001 | 11,10 | 1 | ||||||
| 3 | 101201 | 12,10 | 1 | ||||||
| 4 | 10201 | 10 | 1 | ||||||
| 5 | 2124 | 14,10 | 1 | ||||||
| 6 | 1201 | 4 | |||||||
| 7 | 562 | 16,10 | 1 | ||||||
| 8 | 441 | 11 | 2 | ||||||
| 9 | 351 | 10 | 1 | ||||||
| 10 | 289 | 19,10 | 1 | ||||||
| 11 | 243 | 9 | |||||||
| 12 | 201 | 3 | |||||||
| 13 | 193 | 10 | 1 | ||||||
| 14 | 169 | 12 | 3 | ||||||
| 15 | 144 | 9 | |||||||
| 16 | 121 | 4 |
Factors: 172
289 is in the Pythagorean Triple: (161, 240, 289).