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List of primes numbers from 15 to 28

Prime Numbers Between Calculator

Enter an Interval:
Ex.: 1 to 100, etc.


There are 3 prime numbers between 15 and 28.

They are:


There is 1 tween prime between 15 and 28.

The folowing is the set of tween primes between 15 and 28:


The sum of prime numbers between 15 and 28 is 59.

The average of prime numbers between 15 and 28 is 19.667.

The product of prime numbers between 15 and 28 is 7429.

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 15 to 28 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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