The folowing table expresses '640' 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 | 1010000000 | 10 | 1 | |||||||
3 | 212201 | 22,11 | 2 | |||||||
4 | 22000 | 10 | 1 | |||||||
5 | 10030 | 4 | ||||||||
6 | 2544 | 23 | 5 | |||||||
7 | 1603 | 13 | 4 | |||||||
8 | 1200 | 3 | ||||||||
9 | 781 | 17 | 8 | |||||||
10 | 640 | 10 | 1 | |||||||
11 | 532 | A | ||||||||
12 | 454 | 11 | 2 | |||||||
13 | 3A3 | 13 | 4 | |||||||
14 | 33A | 12 | 3 | |||||||
15 | 2CA | 19 | A | |||||||
16 | 280 | A |
Factors: 27 * 5