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Why is 3 the prime factor of 81?

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Anonymous

12y ago
Updated: 8/18/2019

3 divides 81 without remainder (3*27 = 81) so 3 is a factor of 81.

3 cannot be divided without remainder by any number other than 1 and 3 itself, so 3 is a prime.

Combining the two statements, 3 is a prime factor of 81.

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Wiki User

12y ago

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