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Q: What is the prime factor of 16?

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2 is the largest and only prime factor of 16.

Factors of 16 are 1, 2, 4, 8, and 16. The only prime factor is 2. Note that 1 is neither prime nor composite number.

16 8,2 4,2,2 2,2,2,2

2

The only prime factor these numbers share is 2. It is the only prime factor of 64, which is 2 to the 6th power. The hcf is 16, but that is not a prime.

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The only prime factor of 16 is 2.

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