The folowing table expresses '253' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|---|
| 2 | 11111101 | 111 | 11,10 | 1 | ||||
| 3 | 100101 | 10 | 1 | |||||
| 4 | 3331 | 22,10 | 1 | |||||
| 5 | 2003 | 10 | 1 | |||||
| 6 | 1101 | 3 | ||||||
| 7 | 511 | 10 | 1 | |||||
| 8 | 375 | 17,10 | 1 | |||||
| 9 | 311 | 5 | ||||||
| 10 | 253 | 10 | 1 | |||||
| 11 | 210 | 3 | ||||||
| 12 | 191 | B | ||||||
| 13 | 166 | 10 | 1 | |||||
| 14 | 141 | 6 | ||||||
| 15 | 11D | 10 | 1 | |||||
| 16 | FD,1C | D |
Factors: 11 * 23
253 is in the Pythagorean Triple: (204, 253, 325).
253 is the sum of the counting numbers from 1 to 22 (See 'The Sum/Product of the First N Counting Numbers').