Is 15 a prime number?

Is 15 a prime or composite number?

Answer: Number 15 is not a Prime
15 - is not a Prime Number because it has 4 factors: 1, 3, 5, 15
Number should have exactly two factors to be classified as a Prime number
For 15 to be a prime number it must have only two divisors - 1 and itself (15)

Prime numbers list

NumberIs Prime
No
Yes
Yes
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
No
No
Yes
No
No
No
No
No
Yes
No

About "Is number a Prime" Calculator

This calculator will help you find out if a given number is Prime. For example, it can help you find out is 15 a prime or composite number? (The answer is: No). Enter number (e.g. '15') and hit the 'Calculate' button.
Prime numbers are the positive integers having only two factors - 1 and the number itself

FAQ

Is 15 a prime or composite number?

Number 15 is not a Prime

How many factors are in a number 15?

4