What two numbers have a GCF of 215?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 215.

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 215. Below is the beginning list of multiples of 215 (1 through 7) in numerical order.

1. 215
2. 430
3. 645
4. 860
5. 1075
6. 1290
7. 1505
etc...

Two numbers that have a GCF of 215 can be 215 and any other number on the list above. Thus, two numbers that have a GCF of 215 are:

215 & 430
215 & 645
215 & 860
etc...

That is not all! Any combination of any multiple of 215 and "odd" multiples of 215 will also have GCF of 215. 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 215.

430 & 645
430 & 1075
860 & 1075
860 & 1505
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 215. 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 215, what are the numbers?" or "What are two numbers whose GCF is 215?"

What two numbers have a GCF of 216?
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