What two numbers have a GCF of 864?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 864.

There is actually an infinite number of answers to this question. First, note that both the numbers we are looking for must be multiples of 864. Below is the beginning list of multiples of 864 (1 through 7) in numerical order.

1. 864
2. 1728
3. 2592
4. 3456
5. 4320
6. 5184
7. 6048
etc...

Two numbers that have a GCF of 864 can be 864 and any other number on the list above. Thus, two numbers that have a GCF of 864 are:

864 & 1728
864 & 2592
864 & 3456
etc...

That is not all! Any combination of any multiple of 864 and "odd" multiples of 864 will also have GCF of 864. We numbered the multiples above so it would be easy to identify the "odd" multiples (number 1, 3, 5, 7, etc). Thus, here are some more examples of two numbers that also have a GCF of 864.

1728 & 2592
1728 & 4320
3456 & 4320
3456 & 6048
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 864. The lists we created can go on forever.

Two numbers have a GCF of Calculator
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Teacher Tip: If you are a teacher, you could ask these questions of your students: "I am thinking of two numbers and the GCF is 864, what are the numbers?" or "What are two numbers whose GCF is 864?"

What two numbers have a GCF of 865?
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