What two numbers have a GCF of 345?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 345.

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 345. Below is the beginning list of multiples of 345 (1 through 7) in numerical order.

1. 345
2. 690
3. 1035
4. 1380
5. 1725
6. 2070
7. 2415
etc...

Two numbers that have a GCF of 345 can be 345 and any other number on the list above. Thus, two numbers that have a GCF of 345 are:

345 & 690
345 & 1035
345 & 1380
etc...

That is not all! Any combination of any multiple of 345 and "odd" multiples of 345 will also have GCF of 345. 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 345.

690 & 1035
690 & 1725
1380 & 1725
1380 & 2415
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 345. 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 345, what are the numbers?" or "What are two numbers whose GCF is 345?"

What two numbers have a GCF of 346?
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