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To find a composite number why divide by prime numbers?

Updated: 11/10/2020
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7y ago

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You could try dividing by composite numbers but the number that you are testing is divisible by a composite number, then it will be divisible by a prime factor of that composite number and that prime factor will be smaller. It is always easier to work with smaller numbers.

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7y ago
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7y ago

The very definition of "composite number" is that you can split it up into smaller factors. Eventually, you can express any number as a product of one or more prime numbers.

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Q: To find a composite number why divide by prime numbers?
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