15 and 30 are both composite numbers because each has more factors than 1 and the number itself.
Chat with our AI personalities
30 is composite.
15 is composite.
2 is a prime number and 15 is a composite number.
Factors can be prime or composite. The factors of 30 are 1,2,3,5,6,10,15 and 30. Of these, 3 and 5 are prime. The rest are composite except for 1, which is neither.
Composite.