Prime numbers between 1 and 21

What are Prime numbers between 1 and 21?

Answer: There are 8 prime numbers from 1 to 21

Prime numbers less than 21 table

235711
131719

About "Prime Numbers List" Calculator

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

FAQ

What are Prime numbers between 1 and 21?

There are 8 prime numbers from 1 to 21