What two numbers have a GCF of 198?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 198.

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 198. Below is the beginning list of multiples of 198 (1 through 7) in numerical order.

1. 198
2. 396
3. 594
4. 792
5. 990
6. 1188
7. 1386
etc...

Two numbers that have a GCF of 198 can be 198 and any other number on the list above. Thus, two numbers that have a GCF of 198 are:

198 & 396
198 & 594
198 & 792
etc...

That is not all! Any combination of any multiple of 198 and "odd" multiples of 198 will also have GCF of 198. 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 198.

396 & 594
396 & 990
792 & 990
792 & 1386
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 198. 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 198, what are the numbers?" or "What are two numbers whose GCF is 198?"

What two numbers have a GCF of 199?
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