PRIME FACTORS OF 18
The prime factors of 18 are 2 and 3.
Factor trees can be used to identify the prime factors of a number. The diagram below shows the factor tree of 18.
Prime factors are the numbers at the endpoints. For 18, these numbers are 2 and 3.
The prime factorization of 18 is 2 × 32.
18 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.