The folowing table expresses '8128' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR13 | DR12 | DR11 | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 1111111000000 | 111 | 11,10 | 1 | |||||||||
| 3 | 102011001 | 20 | 2 | ||||||||||
| 4 | 1333000 | 22,10 | 1 | ||||||||||
| 5 | 230003 | 13 | 4 | ||||||||||
| 6 | 101344 | 21 | 3 | ||||||||||
| 7 | 32461 | 22 | 4 | ||||||||||
| 8 | 17700 | 17,10 | 1 | ||||||||||
| 9 | 12131 | 8 | |||||||||||
| 10 | 8128 | 19,10 | 1 | ||||||||||
| 11 | 611A | 17 | 8 | ||||||||||
| 12 | 4854 | 19 | A | ||||||||||
| 13 | 3913 | 13 | 4 | ||||||||||
| 14 | 2D68 | 21 | 3 | ||||||||||
| 15 | 261D | 17 | 8 | ||||||||||
| 16 | 1FC0 | 1C | D |
Factors: 26 * 127
8,128 is the 4th Perfect Number.