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GCF Calculator

QUICK LINKS


GCF Calculator

Greatest Common Factor (GCF)

CALCULATOR
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GCF Calculator

Find the greatest common factor, or GCF, ofand.

Step 1. Remember what a factor is.

A factor is a number that fits evenly into another number.

Step 4. Find the greatest common factor.

This is the largest factor the two numbers have in common.
Factors of
Factors of
So, the greatest common factor, or GCF, is .
We have some questions for you! Help us out through this
INTRO
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A factor is a number that fits evenly into a given number.
Factors always come in pairs consisting of the factor and the number of times it fits evenly into the given number.
It's like we're dividing candy up - the factors are the number of people we can divide the candy equally among and the number of pieces each person gets.
Click on the buttons below to see the factors and factor pairs of :
Factors of
:
fits evenly into times.
The Greatest Common Factor (GCF) is the largest factor two or more numbers have in common.
Factors of
Factors of
When we organize the factors from least to greatest, we can easily see that the GCF of and is .

Greatest Common Divisor (GCD)

GCD is the same thing as GCF. It tells us the largest number two or more numbers can be evenly divided by.
Check out our
Calculator
or explore our
Lesson
and
Practice
sections to learn more about how to find the greatest common factor and test your understanding.

You can also use the Quick Links menu on the left to jump to a section of your choice.

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KEY STEPS
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How to Find the GCF

Step 1. Remember what a factor is.

A factor is a number that fits evenly into another number.

Step 2. Find the factors of the first number.

We’re looking for every number that fits evenly into the first number.

Step 3. Find the factors of the second number.

We’re looking for every number that fits evenly into the second number.

Step 4. Find the greatest common factor.

This is the largest factor the two numbers have in common.
LESSON
β€” Finding the GCF
PRACTICE
β€” Finding the GCF
CONCLUSION
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