Solution: The GCF of 74 and 33 is 1
Methods
How to find the GCF of 74 and 33 using Prime Factorization
One way to find the GCF of 74 and 33 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 74?
What are the Factors of 33?
Here is the prime factorization of 74:
2
1
×
3
7
1
2^1 × 37^1
2 1 × 3 7 1
And this is the prime factorization of 33:
3
1
×
1
1
1
3^1 × 11^1
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 74 and 33 is 1.
Thus, the GCF of 74 and 33 is: 1
How to Find the GCF of 74 and 33 by Listing All Common Factors
The first step to this method of finding the Greatest Common Factor of 74 and 33 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, 74 and 33:
Factors of 74: 1, 2, 37, 74
Factors of 33: 1, 3, 11, 33
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 74 and 33 is 1.
Find the GCF of Other Number Pairs
Want more practice? Try some of these other GCF problems:
What is the GCF of 69 and 38?
What is the GCF of 64 and 15?
What is the GCF of 150 and 132?
What is the GCF of 72 and 138?
What is the GCF of 112 and 26?