Numeric Value: 81
The folowing table expresses '81' 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 | 1010001 | 11,10 | 1 | ||||
| 3 | 10000 | 1 | |||||
| 4 | 1101 | 3 | |||||
| 5 | 311 | 10 | 1 | ||||
| 6 | 213 | 10 | 1 | ||||
| 7 | 144 | 12 | 3 | ||||
| 8 | 121 | 4 | |||||
| 9 | 100 | 1 | |||||
| 10 | 81 | 9 | |||||
| 11 | 74,10 | 1 | |||||
| 12 | 69,13 | 4 | |||||
| 13 | 63 | 9 | |||||
| 14 | 5B,12 | 3 | |||||
| 15 | 56 | B | |||||
| 16 | 51 | 6 |
Math World
Factors: 34
81 is in the Pythagorean Triple: (81, 3280, 3281).
Physical World
81 is the atomic weight of Thallium (Tl).
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