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To work out a number's prime factors, it is best to start by dividing it by the obvious factors. 7056 is even, so it is clear we can divide it by 2. Do this and we get 3528, which is also even. Divide by 2 again and we get 1764, which is also even. Divide by 2 again and we get 882, which is also even. Divide by 2 again and we get 441, which has a digit sum of 9, meaning we can divide by 9 (3x3). Do this, and we get 49, which is in the times tables as 7x7.

This means that the prime factors of 7056 are 2, 2, 2, 2, 3, 3, 7 and 7.

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Q: What is 7056 as a product of prime factors?
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