The folowing table expresses '155' 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 | 10011011 | 101 | 10 | 1 | ||||
| 3 | 12202 | 21,10 | 1 | |||||
| 4 | 2123 | 20 | 2 | |||||
| 5 | 1110 | 3 | ||||||
| 6 | 415 | 14 | 5 | |||||
| 7 | 311 | 5 | ||||||
| 8 | 233 | 10 | 1 | |||||
| 9 | 182 | 12 | 3 | |||||
| 10 | 155 | 11 | 2 | |||||
| 11 | 131 | 5 | ||||||
| 12 | 10B | 10 | 1 | |||||
| 13 | BC,1A | B | ||||||
| 14 | B1 | C | ||||||
| 15 | A5,10 | 1 | ||||||
| 16 | 9B,14 | 5 |
Factors: 5 * 31
155 is in the Pythagorean Triple: (155, 468, 493).