The folowing table expresses '781' 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 | 1100001101 | 101 | 10 | 1 | ||||||
| 3 | 1001221 | 21,10 | 1 | |||||||
| 4 | 30031 | 13,10 | 1 | |||||||
| 5 | 11111 | 10 | 1 | |||||||
| 6 | 3341 | 15,10 | 1 | |||||||
| 7 | 2164 | 16,10 | 1 | |||||||
| 8 | 1415 | 13 | 4 | |||||||
| 9 | 1057 | 14 | 5 | |||||||
| 10 | 781 | 16 | 7 | |||||||
| 11 | 650 | 10 | 1 | |||||||
| 12 | 551 | B | ||||||||
| 13 | 481 | 10 | 1 | |||||||
| 14 | 3DB | 1D,10 | 1 | |||||||
| 15 | 371 | B | ||||||||
| 16 | 30D | 10 | 1 |
Factors: 11 * 71
781 is in the Pythagorean Triple: (781, 2460, 2581).