attention rectangle Definitions are always helpful. reminder Least = Smallest What is 24 as a product of prime numbers? 2 x 2 x 2 x 3 2 x 2 x 3 x 3 2 x 2 x 3 2 x 2 x 2 x 3 What is the greatest number of times 3 appears in any one factorization? 1 reminder Product of primes = Prime factorization What is the least common multiple of 20, 30, and 45? 180