factors
numbers multiplied together to equal other numbers
prime number
a number greater than 1 that can only be evenly divided by itself or 1
prime factorization
dividing a number into prime factors that when multiplied together equal the original number
LCM and GCF
To find either the least common multiple (LCM) or greatest common factor (GCF) of two numbers, you start out the same way: by finding their prime factors.