The folowing table expresses '72' 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 | 1001000 | 10 | 1 | ||||
| 3 | 2200 | 11 | 2 | ||||
| 4 | 1020 | 3 | |||||
| 5 | 242 | 13 | 4 | ||||
| 6 | 200 | 2 | |||||
| 7 | 132 | 6 | |||||
| 8 | 110 | 2 | |||||
| 9 | 80 | 8 | |||||
| 10 | 72 | 9 | |||||
| 11 | 66,11 | 2 | |||||
| 12 | 60 | 6 | |||||
| 13 | 57 | C | |||||
| 14 | 52 | 7 | |||||
| 15 | 4C,11 | 2 | |||||
| 16 | 48 | C |
Factors: 23 * 32
72 is in the Pythagorean Triples: (72, 1295, 1297), (65, 72, 97).
72 is the atomic weight of Hafnium (Hf).