What two numbers have a GCF of 855?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 855.

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 855. Below is the beginning list of multiples of 855 (1 through 7) in numerical order.

1. 855
2. 1710
3. 2565
4. 3420
5. 4275
6. 5130
7. 5985
etc...

Two numbers that have a GCF of 855 can be 855 and any other number on the list above. Thus, two numbers that have a GCF of 855 are:

855 & 1710
855 & 2565
855 & 3420
etc...

That is not all! Any combination of any multiple of 855 and "odd" multiples of 855 will also have GCF of 855. 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 855.

1710 & 2565
1710 & 4275
3420 & 4275
3420 & 5985
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 855. 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 855, what are the numbers?" or "What are two numbers whose GCF is 855?"

What two numbers have a GCF of 856?
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