Q:

What is the GCF of 19 and 58?

Accepted Solution

A:
Solution: The GCF of 19 and 58 is 1 Methods How to find the GCF of 19 and 58 using Prime Factorization One way to find the GCF of 19 and 58 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 19? What are the Factors of 58? Here is the prime factorization of 19: 1 9 1 19^1 1 9 1 And this is the prime factorization of 58: 2 1 Γ— 2 9 1 2^1 Γ— 29^1 2 1 Γ— 2 9 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 19 and 58 is 1. Thus, the GCF of 19 and 58 is: 1 How to Find the GCF of 19 and 58 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 19 and 58 is to find and list all the factors of each number. Again, you can see how this is done by looking at the β€œFactors of” articles that are linked to above. Let’s take a look at the factors for each of these numbers, 19 and 58: Factors of 19: 1, 19 Factors of 58: 1, 2, 29, 58 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 19 and 58 is 1. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 61 and 131? What is the GCF of 55 and 126? What is the GCF of 127 and 119? What is the GCF of 37 and 94? What is the GCF of 11 and 78?