Solution: The GCF of 150 and 32 is 2MethodsHow to find the GCF of 150 and 32 using Prime FactorizationOne way to find the GCF of 150 and 32 is to compare the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here:What are the Factors of 150?What are the Factors of 32?Here is the prime factorization of 150:21×31×522^1 × 3^1 × 5^221×31×52And this is the prime factorization of 32:252^525When you compare the prime factorization of these two numbers, you can see that there are matching prime factors. You can now find the Greatest Common Factor of 150 and 32 by multiplying all the matching prime factors to get a GCF of 150 and 32 as 4:Thus, the GCF of 150 and 32 is: 4How to Find the GCF of 150 and 32 by Listing All Common FactorsThe first step to this method of finding the Greatest Common Factor of 150 and 32 is to find and list all the factors of each number. Again, you can see how this is done by looking at the “Factors of” articles that are linked to above.Let’s take a look at the factors for each of these numbers, 150 and 32:Factors of 150: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150Factors of 32: 1, 2, 4, 8, 16, 32When you compare the two lists of factors, you can see that the common factor(s) are 1, 2. Since 2 is the largest of these common factors, the GCF of 150 and 32 would be 2.Find the GCF of Other Number PairsWant more practice? Try some of these other GCF problems:What is the GCF of 129 and 131?What is the GCF of 41 and 17?What is the GCF of 67 and 108?What is the GCF of 48 and 70?What is the GCF of 42 and 109?