How many prime numbers are there between $100$ to $200$?

Solve for finding prime numbers between given numbers

Given numbers are $100$ and $200$

A prime number is a natural number greater than $1$ with exactly two factors that is $1$ and the number itself. Consider an example$7$, It has two factors $1,7$

The prime numbers between $100$ and $200$ are: $101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199.$

Hence there are total $21$ prime numbers between $100$ and $200$