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Prime Numbers



Definition
A number which has only two factors i.e. itself and 1 is referred to as a Prime Number.
In other words, the numbers which are only divisible by itself and 1 are called Prime Numbers.
Also, a number other than 1; whose factor are 1 and the number itself is known as a Prime Number.

Read the following examples to further understood Prime Numbers

Example 1 = Find given number 5 is prime number ?
Answer = Find the factors of given number 5.
Factors of 5 = 1 and 5
Now, as you can notice that the given number 5 has only two factors i.e 1 and itself.
So, we can say that given number 5 is a Prime Number.

Example 2 = Find given number 8 is prime number ?
Answer = Find the factors of given number 8.
Factors of 8 = 1, 2, 4, 8
Now, as you can notice that the given number 8 has more than two factors.
So, we can say that given number 8 is not a Prime Number.

Example 3 = Find given number 17 is prime number ?
Answer = Find the factors of given number 17.
Factors of 17 = 1 and 17
Now, as you can notice that the given number 17 has only two factors i.e 1 and itself.
So, we can say that given number 17 is a Prime Number.


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