What two numbers have a GCF of 1809?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 1809.

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 1809. Below is the beginning list of multiples of 1809 (1 through 7) in numerical order.

1. 1809
2. 3618
3. 5427
4. 7236
5. 9045
6. 10854
7. 12663
etc...

Two numbers that have a GCF of 1809 can be 1809 and any other number on the list above. Thus, two numbers that have a GCF of 1809 are:

1809 & 3618
1809 & 5427
1809 & 7236
etc...

That is not all! Any combination of any multiple of 1809 and "odd" multiples of 1809 will also have GCF of 1809. 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 1809.

3618 & 5427
3618 & 9045
7236 & 9045
7236 & 12663
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 1809. 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 1809, what are the numbers?" or "What are two numbers whose GCF is 1809?"

What two numbers have a GCF of 1810?
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