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What is the gcf of 17 and 21?

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Anonymous

∙ 12y ago
Updated: 8/20/2019

The gcf is 1. 17 is prime, so its only factors are 1 and 17. 21 has more factors, 1, 3, 7, and 21. The greatest common factor is 1.

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Wiki User

∙ 12y ago
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