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Math Tutor Solution: The GCF of 111 and 111 is 111
Methods
How to find the GCF of 111 and 111 using Prime Factorization
One way to find the GCF of 111 and 111 is to compare the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here:
Here is the prime factorization of 111:
And this is the prime factorization of 111:
When you compare the prime factorization of these two numbers, you can see that there are matching prime factors. You can now find the Greatest Common Factor of 111 and 111 by multiplying all the matching prime factors to get a GCF of 111 and 111 as 12321:
Thus, the GCF of 111 and 111 is: 12321
How to Find the GCF of 111 and 111 by Listing All Common Factors
The first step to this method of finding the Greatest Common Factor of 111 and 111 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, 111 and 111:
Factors of 111: 1, 3, 37, 111
Factors of 111: 1, 3, 37, 111
When you compare the two lists of factors, you can see that the common factor(s) are 1, 3, 37, 111. Since 111 is the largest of these common factors, the GCF of 111 and 111 would be 111.
Math Tutor Suggests: Find the GCF of Other Number Pairs
Want more practice? Try some of these other GCF problems walkthrough from math tutors:
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