Seventeen is the next Prime number after fifteen.
Chat with our AI personalities
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).
5 is but 15 is not a prime number
3 x 5 = 15, so 15 is not a prime number.