Q:

What is the GCF of 4 and 147?

Accepted Solution

A:
Solution: The GCF of 4 and 147 is 1 Methods How to find the GCF of 4 and 147 using Prime Factorization One way to find the GCF of 4 and 147 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 4? What are the Factors of 147? Here is the prime factorization of 4: 2 2 2^2 2 2 And this is the prime factorization of 147: 3 1 × 7 2 3^1 × 7^2 3 1 × 7 2 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 4 and 147 is 1. Thus, the GCF of 4 and 147 is: 1 How to Find the GCF of 4 and 147 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 4 and 147 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, 4 and 147: Factors of 4: 1, 2, 4 Factors of 147: 1, 3, 7, 21, 49, 147 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 4 and 147 is 1. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 128 and 58? What is the GCF of 48 and 138? What is the GCF of 8 and 112? What is the GCF of 90 and 41? What is the GCF of 39 and 113?