5 is but 15 is not a prime number
The prime factors of 15 are: 3, 5
11 and 13
11 and 13 are prime numbers but 15 is a composite number because it has more than two factors
Number of Prime Numbers from 1 to 100 is 25. From 1 to 50 it was 15 From 50 to 100 it was 10
3*5 = 15 in prime numbers
5 is but 15 is not a prime number
The prime factors of 15 are: 3, 5
Number 17 is but 15 isn't as 5x3 isn't a prime number
15 is composite number
No. 15 is the product of two prime numbers: 3 and 5
15
11 and 13
11 and 13 are prime numbers but 15 is a composite number because it has more than two factors
Five is prime and a factor of both numbers.
factors
Number of Prime Numbers from 1 to 100 is 25. From 1 to 50 it was 15 From 50 to 100 it was 10