What two numbers have a GCF of 168?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 168.

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 168. Below is the beginning list of multiples of 168 (1 through 7) in numerical order.

1. 168
2. 336
3. 504
4. 672
5. 840
6. 1008
7. 1176
etc...

Two numbers that have a GCF of 168 can be 168 and any other number on the list above. Thus, two numbers that have a GCF of 168 are:

168 & 336
168 & 504
168 & 672
etc...

That is not all! Any combination of any multiple of 168 and "odd" multiples of 168 will also have GCF of 168. 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 168.

336 & 504
336 & 840
672 & 840
672 & 1176
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 168. 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 168, what are the numbers?" or "What are two numbers whose GCF is 168?"

What two numbers have a GCF of 169?
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