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Since the sum if its digits (1 + 7 + 7 = 15) is divisible by 3, the original number 177 is divisible by 3.

Now we know that it has at least one factor in addition to '1' and itself, so it's not prime.

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15y ago

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the number 177 is not a Prime number. 3 and 59 go into 177.

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15y ago
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composite

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8y ago
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Q: Is 177 a prime number or a composite number?
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