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You need at least two numbers to find a greatest COMMONFactor.

The greatest COMMON factor for 171 will depend upon the other number(s) with which it has COMMON factors, but it WILL be one of the factors of 171, namely one of: 1, 3, 9, 19, 57, 171

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9y ago

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More answers

There is no Greatest Common Factor (GCF) for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more given numbers.

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14y ago
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The GCF is 19.

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Wiki User

11y ago
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The greatest common factor is 19.

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Wiki User

8y ago
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Q: What is the greatest common factor of 172?
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