What two numbers have a GCF of 91?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 91.

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 91. Below is the beginning list of multiples of 91 (1 through 7) in numerical order.

1. 91
2. 182
3. 273
4. 364
5. 455
6. 546
7. 637
etc...

Two numbers that have a GCF of 91 can be 91 and any other number on the list above. Thus, two numbers that have a GCF of 91 are:

91 & 182
91 & 273
91 & 364
etc...

That is not all! Any combination of any multiple of 91 and "odd" multiples of 91 will also have GCF of 91. 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 91.

182 & 273
182 & 455
364 & 455
364 & 637
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 91. 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 91, what are the numbers?" or "What are two numbers whose GCF is 91?"

What two numbers have a GCF of 92?
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