What two numbers have a GCF of 145?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 145.

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 145. Below is the beginning list of multiples of 145 (1 through 7) in numerical order.

1. 145
2. 290
3. 435
4. 580
5. 725
6. 870
7. 1015
etc...

Two numbers that have a GCF of 145 can be 145 and any other number on the list above. Thus, two numbers that have a GCF of 145 are:

145 & 290
145 & 435
145 & 580
etc...

That is not all! Any combination of any multiple of 145 and "odd" multiples of 145 will also have GCF of 145. 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 145.

290 & 435
290 & 725
580 & 725
580 & 1015
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 145. 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 145, what are the numbers?" or "What are two numbers whose GCF is 145?"

What two numbers have a GCF of 146?
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