The folowing table expresses '7' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
Base | DR3 | DR2 | DR1 |
---|---|---|---|
2 | 111 | 11,10 | 1 |
3 | 21,10 | 1 | |
4 | 13,10 | 1 | |
5 | 12 | 3 | |
6 | 11 | 2 | |
7 | 10 | 1 | |
8 | 7 | ||
9 | 7 | ||
10 | 7 | ||
11 | 7 | ||
12 | 7 | ||
13 | 7 | ||
14 | 7 | ||
15 | 7 | ||
16 | 7 |
Factors: Prime
7 is in the Pythagorean Triple: (7, 24, 25).
7 is the 2nd Mersenne number (p=3).
A 'Septagon' is a 'regular polygon' with 7 sides.
7 is the atomic weight of Nitrogen (N).
Uranus is the 7th planet in our solar system. See Planets.