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Program Java untuk Mengecek Bilangan Prima

Apa itu Bilangan Prima?

Bilangan prima adalah bilangan yang hanya habis dibagi 1 atau dirinya sendiri. Misalnya, 11 hanya habis dibagi 1 atau dirinya sendiri. Bilangan prima lainnya 2, 3, 5, 7, 11, 13, 17….

Catatan: 0 dan 1 bukan bilangan prima. 2 adalah satu-satunya bilangan prima genap.

Program Java untuk mengecek bilangan prima atau tidak

Logika Program:

public class PrimenumberToCheckCheck {
 
 public static void main(String[] args) {
  int remainder;
  boolean isPrime=true;
  int numberToCheck=17; // Enter the numberToCheckber you want to check for prime
        
  //Loop to check whether the numberToCheckber is divisible any numberToCheckber other than 1 and itself
  for(int i=2;i<=numberToCheck/2;i++)
  {
   //numberToCheckber is divided by itself
            remainder=numberToCheck%i;
            System.out.println(numberToCheck+" Divided by "+ i + " gives a remainder "+remainder);
            
       //if remainder is 0 than numberToCheckber is not prime and break loop. Else continue the loop
     if(remainder==0)
     {
        isPrime=false;
        break;
     }
  }
  // Check value true or false, if isprime is true then numberToCheckber is prime otherwise not prime
  if(isPrime)
     System.out.println(numberToCheck + " is a Prime numberToCheckber");
  else
     System.out.println(numberToCheck + " is not a Prime numberToCheckber");
    }
  }

Keluaran:

17 Divided by 2 gives a remainder 1
17 Divided by 3 gives a remainder 2
17 Divided by 4 gives a remainder 1
17 Divided by 5 gives a remainder 2
17 Divided by 6 gives a remainder 5
17 Divided by 7 gives a remainder 3
17 Divided by 8 gives a remainder 1
17 is a Prime Number

Periksa program kami untuk Menemukan Bilangan Prima dari 1 hingga 100


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