Solution: The GCF of 147 and 64 is 1
Methods
How to find the GCF of 147 and 64 using Prime Factorization
One way to find the GCF of 147 and 64 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 147?
What are the Factors of 64?
Here is the prime factorization of 147:
3
1
×
7
2
3^1 × 7^2
3 1 × 7 2
And this is the prime factorization of 64:
2
6
2^6
2 6
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 147 and 64 is 1.
Thus, the GCF of 147 and 64 is: 1
How to Find the GCF of 147 and 64 by Listing All Common Factors
The first step to this method of finding the Greatest Common Factor of 147 and 64 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, 147 and 64:
Factors of 147: 1, 3, 7, 21, 49, 147
Factors of 64: 1, 2, 4, 8, 16, 32, 64
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 147 and 64 is 1.
Find the GCF of Other Number Pairs
Want more practice? Try some of these other GCF problems:
What is the GCF of 103 and 32?
What is the GCF of 21 and 37?
What is the GCF of 100 and 112?
What is the GCF of 141 and 88?
What is the GCF of 105 and 135?