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You divide by prime numbers until you get to 1, and then the numbers you divided by are the prime factors.

eg: 660

It's even so I divide by 2 and get 330

That's even so I divide by 2 and get 165

That ends in 5 so I divide by 5 and get 33

I know that divides by 11 so I divide it by 11 and get 3

Divide that by 3 and get 1.

I divided by 2,2,5,11 and 3, so those are the prime factors of 660.

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Q: How do you find the prime factors of a number using division?
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