What two numbers have a GCF of 664?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 664.

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 664. Below is the beginning list of multiples of 664 (1 through 7) in numerical order.

1. 664
2. 1328
3. 1992
4. 2656
5. 3320
6. 3984
7. 4648
etc...

Two numbers that have a GCF of 664 can be 664 and any other number on the list above. Thus, two numbers that have a GCF of 664 are:

664 & 1328
664 & 1992
664 & 2656
etc...

That is not all! Any combination of any multiple of 664 and "odd" multiples of 664 will also have GCF of 664. 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 664.

1328 & 1992
1328 & 3320
2656 & 3320
2656 & 4648
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 664. 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 664, what are the numbers?" or "What are two numbers whose GCF is 664?"

What two numbers have a GCF of 665?
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