What are Co-prime numbers?

Co-prime numbers are those numbers which are prime to each other.

Co-prime numbers have only one common factor i.e. 1.

The H.C.F. of co-prime numbers is always 1.

The L.C.M. of co-prime numbers is always equal to their products.

Example: 3 and 5 are co-prime numbers as they have only one common factor i.e. 1.

4 and 5 are co-prime numbers as they have only one common factor i.e. 1.

Note: Co-prime numbers can be prime numbers or composite numbers.