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PRIME & COMPOSITE NUMBERS

__PRIME & COMPOSITE NUMBERS -__

__PRIME
NUMBERS:-__

**
A number which has only two factors, namely one and the number itself is called a prime number.
Composite numbers are the numbers which having more than two factors, i.e., other than 1 and the
number itself.
**

**Example: 11 is a prime number as it has only two factors 1 and 11.**

**11 ÷ 1 = 11.**

**Factors of 11 are 1 and 11.**

__Example -__ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47,...........................

__COMPOSITE NUMBERS:-__

**Example: 15 is a composite number as it has more than two factors.**

**15 ÷ 1 = 15**

**15 ÷ 5 = 3**

**15 ÷ 3 = 5**

**Factors of 15 are 1, 3, 5, and 15.**

**Other than 1 and 15, it has a third & fourth factor 3 & 5 So, 15 is
a composite number.**

__Example -__ 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35,....................

**NOTE :-**

**· One
is not a prime number,
since it has only one factor.**

**· Two
is the only even prime number.**

**· 4 is the first composite number.**

**There are some other way of understanding about Prime & Composite number -**

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