Q:

What is the GCF of 143 and 141?

Accepted Solution

A:
Solution: The GCF of 143 and 141 is 1 Methods How to find the GCF of 143 and 141 using Prime Factorization One way to find the GCF of 143 and 141 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 143? What are the Factors of 141? Here is the prime factorization of 143: 1 1 1 × 1 3 1 11^1 × 13^1 1 1 1 × 1 3 1 And this is the prime factorization of 141: 3 1 × 4 7 1 3^1 × 47^1 3 1 × 4 7 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 143 and 141 is 1. Thus, the GCF of 143 and 141 is: 1 How to Find the GCF of 143 and 141 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 143 and 141 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, 143 and 141: Factors of 143: 1, 11, 13, 143 Factors of 141: 1, 3, 47, 141 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 143 and 141 is 1. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 23 and 134? What is the GCF of 21 and 12? What is the GCF of 54 and 55? What is the GCF of 93 and 76? What is the GCF of 108 and 13?