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Answer:

417 is not a Prime number. It is a composite number.

Definition:

A prime number has exactly two factors: 1 (also known as unity) and itself. A composite number has more than two factors; in other words, it has at least one factor besides 1 and itself.

Explanation:

Any number for which the digits add to a number divisible by 3 is also divisible by 3, so it has 3 as a factor. The sum of the digits of 417 is 4 + 1 + 7 = 12, which is divisible by 3. Thus, 417 is also divisible by 3, so it is a composite number.
417 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

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Q: Is 417 a prime number or a composite number?
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