# List of primes numbers from 14 to 21

## Prime Numbers Between Calculator

Enter an Interval:

Ex.: 1 to 100, etc.

There are 2 prime numbers between 14 and 21.

They are:

 17 19

There is 1 tween prime between 14 and 21.

The folowing is the set of tween primes between 14 and 21:

(17,19);

The sum of prime numbers between 14 and 21 is 36.

The average of prime numbers between 14 and 21 is 18.

The product of prime numbers between 14 and 21 is 323.

Note: this calculator also includes the starting and the ending number, which form the interval, if they are primes.

You can use this calculator to get the list of prime numbers from 14 to 21 or between any two specified numbers, including them.

## What is a prime number?

A prime number is a number which is only divisible by and itself.

Among mathematicians, 1 is universally regarded as non-prime.

Zero has an infinite number of factors; thus not prime or composite.

## Definition of tween primes or what are tween primes?

For a pair of primes to be Twins, they must obey the following rule.

If i and j are twin primes, then both i and j must be individually primes and also should differ by 2, i.e. (i−j) = 2 or (j−i) = 2

Examples of tween primes sets (pairs):

(3,5); (5,7); (11,13); (17,19); (29,31); (41,43); (59,61); (71,73);

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