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The only common factor of 31 and 63 is 1.

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6y ago
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6y ago

The shared factor is 1

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Q: What is a factor that both 31 and 63 share?
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What is 63 over 45 in lowest terms?

45 and 63 both share a common factor of 9. 45/63 is 5/7 in lowest terms.


What is the greatest common factor of 63 and 31?

The GCF is 1.


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The greatest common factor is 63


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The highest common factor of both numbers is 9