- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
BigInteger.isProbablePrime() method in Java
TheBigInteger.isProbablePrime(int certainty) returns true if this BigInteger is probably prime, false if it's definitely composite. If certainty is ≤ 0, true is returned.
Here, the “certainty” parameter is a measure of the uncertainty that the caller is willing to tolerate: if the call returns true the probability that this BigInteger is prime exceeds (1 - 1/2certainty). The execution time of this method is proportional to the value of this parameter.
The following is an example −
Example
import java.math.BigInteger;
public class Demo {
public static void main(String[] argv) throws Exception {
// create 3 BigInteger objects
BigInteger bi1, bi2;
// create 3 Boolean objects
Boolean b1, b2, b3;
bi1 = new BigInteger("11");
bi2 = new BigInteger("20");
// isProbablePrime()
b1 = bi1.isProbablePrime(1);
b2 = bi2.isProbablePrime(1);
String str1 = bi1+ " is prime with certainty 1 is " +b1;
String str2 = bi2+ " is prime with certainty 1 is " +b2;
System.out.println(str1);
System.out.println(str2);
}
}Output
11 is prime with certainty 1 is true 20 is prime with certainty 1 is false
Updated on: 30-Jul-2019
155 Views
Advertisements