Numeric Value: 7

The folowing table expresses '7' in various number bases. 'DR_x' 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

Math World

Factors: Prime

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.