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What is the GCF of 1 and 21?

Updated: 10/17/2024

Wiki User

∙ 13y ago

Best Answer

Factors of 1: 1

Factors of 21: 1 3 7 21

Common factors: 1

Greatest common factor: 1 (There's only one!)

The GCF is 1 which means that they are relatively prime. (In fact, 1 is relatively prime to any number!)

Wiki User

∙ 13y ago

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