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Home >> Numbers >> Prime Numbers >>

Prime Numbers

Numbers and Numerals Composite Numbers Prime Numbers Facts (Prime Numbers) Even Numbers
Odd Numbers Natural Numbers Whole Numbers Predecessor Number Successor Number
Number Expansion Number Comparison Literal Numbers Roman Numbers Coprime Numbers
Perfect Numbers Multiplication Properties of Numbers Order of Numbers Sieve of Eratosthenes Number line
Square Numbers Shortcut Method of Numbers Cube Numbers Real 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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