The folowing table expresses '51' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|
| 2 | 110011 | 100 | 1 | |||
| 3 | 1220 | 12,10 | 1 | |||
| 4 | 303 | 12 | 3 | |||
| 5 | 201 | 3 | ||||
| 6 | 123 | 10 | 1 | |||
| 7 | 102 | 3 | ||||
| 8 | 63,11 | 2 | ||||
| 9 | 56,12 | 3 | ||||
| 10 | 51 | 6 | ||||
| 11 | 47,10 | 1 | ||||
| 12 | 43 | 7 | ||||
| 13 | 3C,12 | 3 | ||||
| 14 | 39 | C | ||||
| 15 | 36 | 9 | ||||
| 16 | 33 | 6 |
Factors: 3 * 17
51 is in the Pythagorean Triples: (51, 140, 149), (51, 1300, 1301).
51 is the atomic weight of Antimony (Sb).