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    Is 21 a prime number?

    Kamendra kumar 31st Jan, 2023
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    Kamendra kumar 31st Jan, 2023

    No, 21 is not prime. The number 21 is divisible by 1, 3, 7, and 21. Exactly two divisors are required for a number to be classified as prime. 21 is not prime because it has two or more divisors (1, 3, 7, 21).

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