What two numbers have a GCF of 43?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 43.

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 43. Below is the beginning list of multiples of 43 (1 through 7) in numerical order.

1. 43
2. 86
3. 129
4. 172
5. 215
6. 258
7. 301
etc...

Two numbers that have a GCF of 43 can be 43 and any other number on the list above. Thus, two numbers that have a GCF of 43 are:

43 & 86
43 & 129
43 & 172
etc...

That is not all! Any combination of any multiple of 43 and "odd" multiples of 43 will also have GCF of 43. 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 43.

86 & 129
86 & 215
172 & 215
172 & 301
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 43. 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 43, what are the numbers?" or "What are two numbers whose GCF is 43?"

What two numbers have a GCF of 44?
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