What two numbers have a GCF of 489?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 489.

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 489. Below is the beginning list of multiples of 489 (1 through 7) in numerical order.

1. 489
2. 978
3. 1467
4. 1956
5. 2445
6. 2934
7. 3423
etc...

Two numbers that have a GCF of 489 can be 489 and any other number on the list above. Thus, two numbers that have a GCF of 489 are:

489 & 978
489 & 1467
489 & 1956
etc...

That is not all! Any combination of any multiple of 489 and "odd" multiples of 489 will also have GCF of 489. 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 489.

978 & 1467
978 & 2445
1956 & 2445
1956 & 3423
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 489. 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 489, what are the numbers?" or "What are two numbers whose GCF is 489?"

What two numbers have a GCF of 490?
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