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  1. Prepare
  2. Java
  3. BigNumber
  4. Java Primality Test
  5. Discussions

Java Primality Test

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281 Discussions

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  • namnika_janband1
     + 0 comments

    java 15:

    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        String n = bufferedReader.readLine();
        
        BigInteger b =  new BigInteger(n);
        boolean isPrime = b.isProbablePrime(100);
        
        if(isPrime){
            System.out.println("prime");
        }else{
            System.out.println("not prime");
        }
       

        bufferedReader.close();
    }

  • Damian_GDO_92
     + 0 comments
    import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;



public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        String n = bufferedReader.readLine();
        BigInteger number = new BigInteger(n);
        
        if (number.isProbablePrime(20)) {
            System.out.print("prime");
        } else {
            System.out.print("not prime");
        }

        bufferedReader.close();
    }
}

  • yashdeora98294
     + 0 comments

    Here is Java Primality Test solution - https://programmingoneonone.com/hackerrank-java-primality-test-problem-solution.html

  • vegaromeroalvaro
     + 0 comments

    Just add this to the main method :)

            if((new BigInteger(n).isProbablePrime(100)))
            System.out.println("prime");
        else 
            System.out.println("not prime");

  • juanalv20
     + 0 comments
    import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;



public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        String n = bufferedReader.readLine();
        
        bufferedReader.close();
        
        BigInteger big = new BigInteger(n);
        
        if(big.isProbablePrime(2)){
            System.out.println("prime");                    
        }
        else{
            System.out.println("not prime");        
            }
    }
}