PRIME FACTORS OF 15
The prime factors of 15 are 3 and 5.
Factor trees can be used to identify the prime factors of a number. The diagram below shows the factor tree of 15.
Prime factors are the numbers at the endpoints. For 15, these numbers are 3 and 5.
The prime factorization of 15 is 3 × 5.
15 is a composite number.
A prime factor is a factor that is prime. Prime factors can be identified by checking the endpoints of a factor tree.