The folowing table expresses '651' 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 | 1010001011 | 101 | 10 | 1 | ||||||
| 3 | 220010 | 12,10 | 1 | |||||||
| 4 | 22023 | 21 | 3 | |||||||
| 5 | 10101 | 3 | ||||||||
| 6 | 3003 | 10 | 1 | |||||||
| 7 | 1620 | 12 | 3 | |||||||
| 8 | 1213 | 7 | ||||||||
| 9 | 803 | 12 | 3 | |||||||
| 10 | 651 | 12 | 3 | |||||||
| 11 | 542 | 10 | 1 | |||||||
| 12 | 463 | 11 | 2 | |||||||
| 13 | 3B1 | 12 | 3 | |||||||
| 14 | 347 | 10 | 1 | |||||||
| 15 | 2D6 | 16 | 7 | |||||||
| 16 | 28B | 15 | 6 |
Factors: 3 * 7 * 31
651 is in the Pythagorean Triple: (260, 651, 701).