3*5 = 15 in prime numbers
15 is a composite number. 11 is a prime number.
The prime factorization of 15 is 3 x 5.
15 is not a prime number because it is not only divisible by 1 and itself it is also divisible by 3.
15 is relatively prime.
3*5 = 15 in prime numbers
15 is a factor of 45, but it is not a prime number.
2 is a prime number and 15 is a composite number.
3 and 5 are Prime Factors of 15 (3x5=15).
Number 17 is but 15 isn't as 5x3 isn't a prime number
5 is but 15 is not a prime number
3 x 5 = 15, so 15 is not a prime number.
The prime factors of 15 are: 3, 5
15 is a composite number. 11 is a prime number.
A number is prime if it has only 1 and itself as factors. For example, 7 is a prime number because it has only 1 and 7 as factors. 15 isn't a prime number because it has 1, 3, 5, and 15 as factors.
11 is prime.
The prime factors of 15 are 3 and 5.