Solution: The GCF of 32 and 57 is 1MethodsHow to find the GCF of 32 and 57 using Prime FactorizationOne way to find the GCF of 32 and 57 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 32?What are the Factors of 57?Here is the prime factorization of 32:252^525And this is the prime factorization of 57:31×1913^1 × 19^131×191When you compare the prime factorization of these two numbers, you can see that there are no matching prime factors. When this is the case, it means that there are no common factors between these two numbers. As a result, the GCF of 32 and 57 is 1.Thus, the GCF of 32 and 57 is: 1How to Find the GCF of 32 and 57 by Listing All Common FactorsThe first step to this method of finding the Greatest Common Factor of 32 and 57 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, 32 and 57:Factors of 32: 1, 2, 4, 8, 16, 32Factors of 57: 1, 3, 19, 57When you compare the two lists of factors, you can see that the only common factor is 1. So, in this case, the GCF of 32 and 57 is 1.Find the GCF of Other Number PairsWant more practice? Try some of these other GCF problems:What is the GCF of 58 and 50?What is the GCF of 104 and 55?What is the GCF of 121 and 97?What is the GCF of 39 and 65?What is the GCF of 77 and 10?