Check if 17 is prime

Medium 30 pts New · no attempts yet csharp

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Print Prime or Not Prime for 17.

Static hints

Loop d while d*d <= n

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Official solution

using System;

class Program
{
    static void Main()
    {
        int n = 17;
        bool ok = n > 1;
        for (int d = 2; d * d <= n && ok; d++)
            if (n % d == 0) ok = false;
        Console.WriteLine(ok ? "Prime" : "Not Prime");
    }
}

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Explanation

Trial division to sqrt(n).

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Check if 17 is prime

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