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  3. What is the largest prime factor of 636?______

What is the largest prime factor of 636?______

admin2013-05-19  54
问题 What is the largest prime factor of 636?______
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答案53
解析 The correct answer is 53. The best way to determine the prime factors of a large number is to use a factor tree. Start with 636, and divide by any available prime factor: for instance, two factors of 636 are 2 and 318. Next, 318 is divisible by the prime number 3, leaving 106. Finally, 106 is divisible by 2, which leaves you with 53.
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