How do you take a big number in Java?

Use the static valueOf method to turn an ordinary number into a big number: BigInteger a = BigInteger. valueOf(100); Unfortunately, you cannot use the familiar mathematical operators such as + and * to combine big numbers.

How do you take a large value in Java?

Handling Very Large Numbers

  1. Problem. You need to handle integer numbers larger than Long. …
  2. Solution. Use the BigInteger or BigDecimal values in package java. …
  3. Discussion. Both BigInteger and BigDecimal objects are immutable; that is, once constructed, they always represent a given number.

How do you handle numbers larger than Long in Java?

The largest integer number that a long type can represent is 9223372036854775807. If we deal with even larger numbers, we have to use the java.


Type Size Range
char 16 bits 0 to 65,535
int 32 bits -2,147,483,648 to 2,147,483,647
long 64 bits -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

How do you write a long number in Java?

Example 1

  1. public class LongExample1.
  2. {
  3. public static void main(String…k)
  4. {
  5. long num1=10L;
  6. long num2=-10L;
  7. System.out.println(“num1: “+num1);
  8. System.out.println(“num2: “+num2);
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What is big number in Java?

BigInteger provides analogues to all of Java’s primitive integer operators, and all relevant methods from java. lang. Math. Additionally, BigInteger provides operations for modular arithmetic, GCD calculation, primality testing, prime generation, bit manipulation, and a few other miscellaneous operations.

How do you add two large numbers in Java?

Sum of two large numbers

  1. Reverse both strings.
  2. Keep adding digits one by one from 0’th index (in reversed strings) to end of smaller string, append the sum % 10 to end of result and keep track of carry as sum/10.
  3. Finally reverse the result.

What is 10L in Java?

When you type “return 10L” it means that you are telling the compiler that the value want returned is a long integer (32-bit) as opposed to int (16-bit).

How do you store numbers bigger than long?

You must use BigInteger to store values that exceed the max value of long.

What is 1L in Java?

(long) 1 is a constant expression (because the 1 is directly known) and hence, by the rules of the Java Language Specification (JLS), will be a long after compilation already. However, in my experience, it is far more common that people use the long literal and write 1L for readability.

What does 1L in Java mean?

It’s an integer constant that has a long int type instead of int . C11, § Integer constants #1. long-suffix: one of l L.

Is Long bigger than double Java?

Furthermore, the data type long stores whole numbers from 9223372036854775808 to 9223372036854775807. On the other hand, double stores values from 1.7e-308 to 1.7e+038.

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How do I use isProbablePrime?

The isProbablePrime() method of Java BigInteger class is used to determine if the given number is prime or not. For certainty =1, this method returns true if this BigInteger is prime and false if this BigInteger is composite.

How do I mod BigInteger in Java?

mod(BigInteger m) returns a BigInteger whose value is (this mod m). This method differs from remainder in that it always returns a non-negative BigInteger.

How do I scan a large integer in Java?

Example 1

  1. import java.math.BigInteger;
  2. import java.util.*;
  3. public class ScannerNextBigIntegerExample1 {
  4. public static void main(String args[]){
  5. System.out.print(“Enter BigInteger Number to check prime: “);;
  6. Scanner in = new Scanner(;
  7. BigInteger n = in.nextBigInteger();
  8. in.close();