Prime numbers between 1 and 21

"Prime Numbers List" Calculator

Find all prime numbers between

and

Answer for "What are Prime numbers between 1 and 21?"

There are 8 prime numbers from 1 to 21:
 2, 3, 5, 7, 11, 13, 17, 19 

About "Prime Numbers List" Calculator

This calculator will show a list of primes between the given numbers. For example, What are Prime numbers between 1 and 21? Select the initial number (e.g. '1') and the finite number (e.g. '21'). After that click the 'Calculate' button.
Prime numbers are the positive integers having only two factors - 1 and the number itself

"Prime Numbers List" Calculator

Find all prime numbers between

and