What are Co-prime Numbers ?

What are Co-prime Numbers ?

If 1 is the only common factor between two numbers then they are said to be Co-prime Numbers.

Example

Check whether 7 and 15 are co-prime numbers or not.

Solution:

Factors of 7 are 1 and 7.

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

The common factor of 7 and 15 is 1 only. Hence they are the co-prime numbers.