Concept used:

We use the concept of definition.

Prime numbers are the numbers which have only two factors 1 and itself.

Composite numbers are the numbers which have more than two factors i.e. they have at least one factor other than 1 and itself.

Calculation:

As the given number is 91, and \(\displaystyle{91}={1}\times{91}={7}\times{13}\) implies 97 is a composite number as it has 7 and 13 as its factors.

Conclusion:

The given number is a composite number.

We use the concept of definition.

Prime numbers are the numbers which have only two factors 1 and itself.

Composite numbers are the numbers which have more than two factors i.e. they have at least one factor other than 1 and itself.

Calculation:

As the given number is 91, and \(\displaystyle{91}={1}\times{91}={7}\times{13}\) implies 97 is a composite number as it has 7 and 13 as its factors.

Conclusion:

The given number is a composite number.