What two numbers have a GCF of 657?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 657.

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 657. Below is the beginning list of multiples of 657 (1 through 7) in numerical order.

1. 657
2. 1314
3. 1971
4. 2628
5. 3285
6. 3942
7. 4599
etc...

Two numbers that have a GCF of 657 can be 657 and any other number on the list above. Thus, two numbers that have a GCF of 657 are:

657 & 1314
657 & 1971
657 & 2628
etc...

That is not all! Any combination of any multiple of 657 and "odd" multiples of 657 will also have GCF of 657. 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 657.

1314 & 1971
1314 & 3285
2628 & 3285
2628 & 4599
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 657. 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 657, what are the numbers?" or "What are two numbers whose GCF is 657?"

What two numbers have a GCF of 658?
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