Q:

What is the GCF of 53 and 66?

Accepted Solution

A:
Solution: The GCF of 53 and 66 is 1 Methods How to find the GCF of 53 and 66 using Prime Factorization One way to find the GCF of 53 and 66 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 53? What are the Factors of 66? Here is the prime factorization of 53: 5 3 1 53^1 5 3 1 And this is the prime factorization of 66: 2 1 × 3 1 × 1 1 1 2^1 × 3^1 × 11^1 2 1 × 3 1 × 1 1 1 When 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 53 and 66 is 1. Thus, the GCF of 53 and 66 is: 1 How to Find the GCF of 53 and 66 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 53 and 66 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, 53 and 66: Factors of 53: 1, 53 Factors of 66: 1, 2, 3, 6, 11, 22, 33, 66 When you compare the two lists of factors, you can see that the only common factor is 1. So, in this case, the GCF of 53 and 66 is 1. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 148 and 93? What is the GCF of 150 and 4? What is the GCF of 119 and 21? What is the GCF of 103 and 42? What is the GCF of 107 and 143?