The folowing table expresses '77' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|
| 2 | 1001101 | 100 | 1 | ||||
| 3 | 2212 | 21,10 | 1 | ||||
| 4 | 1031 | 11 | 2 | ||||
| 5 | 302 | 10 | 1 | ||||
| 6 | 205 | 11 | 2 | ||||
| 7 | 140 | 5 | |||||
| 8 | 115 | 7 | |||||
| 9 | 85,14 | 5 | |||||
| 10 | 77,14 | 5 | |||||
| 11 | 70 | 7 | |||||
| 12 | 65 | B | |||||
| 13 | 5C,14 | 5 | |||||
| 14 | 57 | C | |||||
| 15 | 52 | 7 | |||||
| 16 | 4D,11 | 2 |
Factors: 7 * 11
77 is in the Pythagorean Triples: (36, 77, 85), (77, 2964, 2965).
77 is the atomic weight of Iridium (Ir).