What two numbers have a GCF of 651?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 651.

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 651. Below is the beginning list of multiples of 651 (1 through 7) in numerical order.

1. 651
2. 1302
3. 1953
4. 2604
5. 3255
6. 3906
7. 4557
etc...

Two numbers that have a GCF of 651 can be 651 and any other number on the list above. Thus, two numbers that have a GCF of 651 are:

651 & 1302
651 & 1953
651 & 2604
etc...

That is not all! Any combination of any multiple of 651 and "odd" multiples of 651 will also have GCF of 651. 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 651.

1302 & 1953
1302 & 3255
2604 & 3255
2604 & 4557
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 651. 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 651, what are the numbers?" or "What are two numbers whose GCF is 651?"

What two numbers have a GCF of 652?
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