Prime and Composite Numbers

Prime numbers

A counting number having exactly two factors is called a prime numbers.

Ex-

2,\ 3,\ 5,\ 7,\ 11,\ 13,\ 17,\cdots

The smallest prime number is  2.

Composite numbers

A counting number having more than two factors is called a composite number.

Ex-

 4,\ 6,\ 8,\ 9,\ 10,\ 12,\ 14  etc.

1 is neither prime nor composite.

 

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