What two numbers have a GCF of 171?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 171.

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 171. Below is the beginning list of multiples of 171 (1 through 7) in numerical order.

1. 171
2. 342
3. 513
4. 684
5. 855
6. 1026
7. 1197
etc...

Two numbers that have a GCF of 171 can be 171 and any other number on the list above. Thus, two numbers that have a GCF of 171 are:

171 & 342
171 & 513
171 & 684
etc...

That is not all! Any combination of any multiple of 171 and "odd" multiples of 171 will also have GCF of 171. 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 171.

342 & 513
342 & 855
684 & 855
684 & 1197
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 171. 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 171, what are the numbers?" or "What are two numbers whose GCF is 171?"

What two numbers have a GCF of 172?
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