The folowing table expresses '80' 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 | 1010000 | 10 | 1 | ||||
3 | 2222 | 22,11 | 2 | ||||
4 | 1100 | 2 | |||||
5 | 310 | 4 | |||||
6 | 212 | 5 | |||||
7 | 143 | 11 | 2 | ||||
8 | 120 | 3 | |||||
9 | 88,17 | 8 | |||||
10 | 80 | 8 | |||||
11 | 73 | A | |||||
12 | 68,12 | 3 | |||||
13 | 62 | 8 | |||||
14 | 5A,11 | 2 | |||||
15 | 55 | A | |||||
16 | 50 | 5 |
Factors: 24 * 5
80 is in the Pythagorean Triples: (80, 1599, 1601), (39, 80, 89).
A 'Octacontagon' is a 'regular polygon' with 80 sides.
80 is the atomic weight of Mercury (Hg).