What two numbers have a GCF of 404?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 404.

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 404. Below is the beginning list of multiples of 404 (1 through 7) in numerical order.

1. 404
2. 808
3. 1212
4. 1616
5. 2020
6. 2424
7. 2828
etc...

Two numbers that have a GCF of 404 can be 404 and any other number on the list above. Thus, two numbers that have a GCF of 404 are:

404 & 808
404 & 1212
404 & 1616
etc...

That is not all! Any combination of any multiple of 404 and "odd" multiples of 404 will also have GCF of 404. 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 404.

808 & 1212
808 & 2020
1616 & 2020
1616 & 2828
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 404. 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 404, what are the numbers?" or "What are two numbers whose GCF is 404?"

What two numbers have a GCF of 405?
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