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No because you have to have a Prime number besides 1 like 2,5,7 because every time you use a factor tree and you put a 1 as prime you keep getting one every time.So one can not be use as a factor when doing a factor tree.

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14y ago
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11y ago

No, because any number times one equals that number, so you would pretty much have an endless amount of ones on your tree. Hope that helps

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11y ago

No, 1 is not a prime number.

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Wiki User

8y ago

You can, you just won't get anywhere.

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Q: Can the number 1 be used as a factor in a factor tree?
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