The folowing table expresses '2211' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR12 | DR11 | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 100010100011 | 101 | 10 | 1 | ||||||||
| 3 | 10000220 | 12,10 | 1 | |||||||||
| 4 | 202203 | 21 | 3 | |||||||||
| 5 | 32321 | 21 | 3 | |||||||||
| 6 | 14123 | 15,10 | 1 | |||||||||
| 7 | 6306 | 21 | 3 | |||||||||
| 8 | 4243 | 15 | 6 | |||||||||
| 9 | 3026 | 12 | 3 | |||||||||
| 10 | 2211 | 6 | ||||||||||
| 11 | 1730 | 10 | 1 | |||||||||
| 12 | 1343 | B | ||||||||||
| 13 | 1011 | 3 | ||||||||||
| 14 | B3D | 1D,10 | 1 | |||||||||
| 15 | 9C6 | 1C | D | |||||||||
| 16 | 8A3 | 15 | 6 |
Factors: 3 * 11 * 67
2 is the sum of the counting numbers from 1 to 66 (See 'The Sum/Product of the First N Counting Numbers').