C# Arrays/ Task - 15 Prime Numbers

using System;

class SieveOfEratosthenes
{
    static void Main()
    {
        int[] nums = new int[10000000];
        for (int i = 0; i < nums.Length; i++)
        {
            nums[i] = i + 1;
        }
        for (int index = 0; index < nums.Length; index++)
        {
            for (int check = 2; check <= nums[index]; check++)
            {
                bool checking = nums[index] % check == 0;
                if (checking == true && (check == nums[index]))
                {
                    Console.WriteLine(nums[index]);
                }
                else if (checking == true && (check != nums[index]))
                {
                    break;
                }
                else if (checking == false)
                {
                    if (check <= nums[index])
                    {
                        continue;
                    }
                    else if (check == nums[index])
                    {
                        Console.WriteLine(nums[index]);
                    }
                }
            }
        }
    }
}