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This is a ridiculous question, due to the fact that 31 is a Prime number. Therefore, as 31 is not a factor of 30, the highest common factor can only be 1.

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14y ago

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Special case. 13 and 31 have no common factors other than 1. In such cases, the GCF is 1 and the LCM is their product (403).

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9y ago
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The GCF is 1.

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Wiki User

12y ago
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The GCF is 1.

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Wiki User

9y ago
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The GCF is 1.

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Wiki User

10y ago
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GCF(67, 65, 31) = 1.

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Wiki User

10y ago
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Q: How do you solve the greatest common factor of 30 and 31?
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