Prime or Composite Numbers Calculator

An integer which is divisible only by itself and one is called as prime number. If the integer has more than two factors then it is called as composite number. 1 is neither a prime nor a composite number. Any even number other than two will be not be a prime number. This Online prime or composite numbers calculator is used to find whether the entered number is prime or composite. For example, 347 is a prime number whereas, 345 is a composite number.

Find Prime or Composite Numbers

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Example

Find whether the numbers 5 and 6 are Prime or Composite Number?
Solution : To find the primality of 5 and 6, first we need to find the factors of the numbers

5 = 1x5
6 = 1x6, 2x3 , 3x2

5 has only 1 and 5 as its factors. Hence it is prime number.
6 has more than 2 factors. Hence it is a composite.

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