The folowing table expresses '84' 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 | 1010100 | 11,10 | 1 | ||||
| 3 | 10010 | 2 | |||||
| 4 | 1110 | 3 | |||||
| 5 | 314 | 13 | 4 | ||||
| 6 | 220 | 4 | |||||
| 7 | 150 | 6 | |||||
| 8 | 124 | 7 | |||||
| 9 | 103 | 4 | |||||
| 10 | 84,12 | 3 | |||||
| 11 | 77,13 | 4 | |||||
| 12 | 70 | 7 | |||||
| 13 | 66 | C | |||||
| 14 | 60 | 6 | |||||
| 15 | 59 | E | |||||
| 16 | 54 | 9 |
Factors: 22 * 3 * 7
84 is in the Pythagorean Triples: (13, 84, 85), (84, 1763, 1765), (84, 437, 445), (84, 187, 205).
84 is the atomic weight of Polonium (Po).