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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- class PrimeCheckerMethod
- {
- static bool PrimeChecker(long input)
- {
- if (input < 2)
- {
- return false;
- }
- else
- {
- int divider = 2;
- double maxDivider = Math.Sqrt(input);
- while (divider <= maxDivider)
- {
- if (input % divider == 0)
- {
- return false;
- }
- divider++;
- }
- }
- return true;
- }
- static void Main()
- {
- long number = long.Parse(Console.ReadLine());
- Console.WriteLine("\"{0}\" is prime? {1}", number, PrimeChecker(number));
- }
- }
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