Numeric Value: 7

The folowing table expresses '7' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.

BaseDR3DR2DR1
211111,101
3 21,101
4 13,101
5 123
6 112
7 101
8  7
9  7
10  7
11  7
12  7
13  7
14  7
15  7
16  7

Math World

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.

Physical World

7 is the atomic weight of Nitrogen (N).

Uranus is the 7th planet in our solar system. See Planets.