Q:

What is the GCF of 56 and 146?

Accepted Solution

A:
Solution: The GCF of 56 and 146 is 2 Methods How to find the GCF of 56 and 146 using Prime Factorization One way to find the GCF of 56 and 146 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 56? What are the Factors of 146? Here is the prime factorization of 56: 2 3 × 7 1 2^3 × 7^1 2 3 × 7 1 And this is the prime factorization of 146: 2 1 × 7 3 1 2^1 × 73^1 2 1 × 7 3 1 When 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 56 and 146 by multiplying all the matching prime factors to get a GCF of 56 and 146 as 4: Thus, the GCF of 56 and 146 is: 4 How to Find the GCF of 56 and 146 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 56 and 146 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, 56 and 146: Factors of 56: 1, 2, 4, 7, 8, 14, 28, 56 Factors of 146: 1, 2, 73, 146 When 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 56 and 146 would be 2. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 148 and 92? What is the GCF of 139 and 82? What is the GCF of 74 and 37? What is the GCF of 13 and 50? What is the GCF of 62 and 46?