All except 15
Chat with our AI personalities
11 and 13 are prime numbers but 15 is a composite number because it has more than two factors
12, 14, 15, 16, and 18 are composite numbers 11, 13, 17, and 19 are prime numbers
No, they are composite numbers. The factors of 15 are 1, 3, 5, and 15. The factors of 33 are 1, 3, 11, and 33. Prime numbers have two factors: 1 and the number itself, so 15 and 33 cannot be prime.
They are: 5 7 11 and 13
The given numbers of 15 and 35 are not prime numbers but they add up to 50