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A Prime number is a number with two and only two factors: 1 (also known as unity) and itself. 8127 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 3. (You can check this by adding the digits of the number: 8 + 1 + 2 + 7 = 18. If the sum of the digits is divisible by 3, the number is also divisible by 3.) Therefore, 8127 is a composite number.

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8127 is not prime. 8127 = 3 * 3 * 3 * 7 * 43

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15y ago
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Q: Is 8127 a prime number or a composite number?
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