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45 and 64 are not prime numbers because they both have more than two factors

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9y ago
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8y ago

45 and 64 relatively prime because their GCF is 1.

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9y ago

The only prime factor of 64 is 2 and 2 does not divide 45. So the two numbers cannot have any common factor (other than 1) - which is the same as saying that they are relatively prime.

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Q: Are 45 and 64 relatively prime why?
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