What two numbers have a GCF of 401?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 401.

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 401. Below is the beginning list of multiples of 401 (1 through 7) in numerical order.

1. 401
2. 802
3. 1203
4. 1604
5. 2005
6. 2406
7. 2807
etc...

Two numbers that have a GCF of 401 can be 401 and any other number on the list above. Thus, two numbers that have a GCF of 401 are:

401 & 802
401 & 1203
401 & 1604
etc...

That is not all! Any combination of any multiple of 401 and "odd" multiples of 401 will also have GCF of 401. 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 401.

802 & 1203
802 & 2005
1604 & 2005
1604 & 2807
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 401. 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 401, what are the numbers?" or "What are two numbers whose GCF is 401?"

What two numbers have a GCF of 402?
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