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# What are prime numbers and composite numbers And how we can know thank the prime or composite numbers are odd or even?

Prime numbers are those numbers that are divisible by 1 and themselves. They have only two factors that include 1 and themselves.

For example, 2, 3, 5, 7, 11, 13.....are all prime numbers

2 is the only even prime number

All prime numbers, except 2 are odd numbers

All numbers, other than prime numbers are composite numbers.

Composite numbers have three or more factors.

For example 4, 6, 8, 9, 10, 12,....are composite numbers

they have three or more factors

4 = 1x 2 x 2

4 is the smallest composite numbers

Composite numbers can be even or odd numbers

Every composite number can be expressed as a product of prime factors.

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