3 — math

About

3 is a natural number, and an integer that proceeds 2 and precedes 4. 3 is the second prime number.

3 is a prime number, being the smallest prime, Mersenne prime, Fermat prime, and Cullen prime.
A number is divisible by 3 if the sum of the digits is 3 in base-10.
It is the 4th term in the Fibonacci Sequence.
3 is the smallest number that is not a superior highly composite number.
2 famous constants, pi and e both round to 3.
- They both also coincidentially spell out 'pie'.
3 is the minimum requirement for the number of sides in a 2D polygon.
3 points are required to define a plane in 3D space, 3 points always lie on a plane.
3 is the only number in the sequence n²-1 to be prime.

1 × 3 = 3

2 × 3 = 6

3 × 3 = 9

4 × 3 = 12

5 × 3 = 15

6 × 3 = 18

7 × 3 = 21

8 × 3 = 24

9 × 3 = 27

10 × 3 = 30

11 × 3 = 33

12 × 3 = 36

The human brain naturally groups visual information by threes, as this is because three items are the minimum requirement to be considered a pattern.
Three bones in the ear.
Three primary colours.
Three wishes.
Three Little Pigs.
Three naturally occuring colours for apples.
Three-star level progress.
Three elements first created in the big bang.
Goldilocks and the three bears.
Three spatial dimensions (unless if you consider M-Theory).
There are three primary colours.
Three feet make one yard.

3's value is: