BigInteger bitLength() Method in Java Last Updated : 24 Mar, 2025 Comments Improve Suggest changes Like Article Like Report The java.math.BigInteger.bitLength() method returns the number of bits in the minimal two's-complement representation of this BigInteger, excluding a sign bit. For positive BigIntegers, this is equivalent to the number of bits in the ordinary binary representation. The bitLength method Computes (ceil(log2(this < 0 ? -this : this+1))).Syntax: public int bitLength()Parameters: The method does not take any parameters.Return Value: The method is used to return the number of bits in the minimal two’s-complement representation of this BigInteger, excluding a sign bit.Examples: Input: value = 2300 Output: 12Explanation:Binary signed 2's complement of 2300 = 0000100011111100first four bits are signed bit so exclude them than remaining no of bits = 12. So bitLength in 0000100011111100 = 12.Input: value = 5482549Output: 23The below program illustrates the use of the bitLength() method of BigInteger. Java // Program to demonstrate bitLength() method of BigInteger import java.math.*; public class GFG { public static void main(String[] args) { // Create BigInteger objects BigInteger biginteger = new BigInteger("2300"); // Call bitLength() method on bigInteger int count = biginteger.bitLength(); String result = "bitLength of " + biginteger + " is " + count; // Print result System.out.println(result); } } OutputbitLength of 2300 is 12 Comment More infoAdvertise with us Next Article BigInteger bitLength() Method in Java A AmanSingh2210 Follow Improve Article Tags : Java Java-Functions java-math Java-BigInteger Java-math-package +1 More Practice Tags : JavaJava-BigInteger Similar Reads BigInteger bitCount() Method in Java Prerequisite: BigInteger Basics The java.math.BigInteger.bitCount() method returns number of bits in the two's complement representation of this BigInteger that differ from its sign bit. This method is useful when implementing bit-vector style sets atop BigIntegers.Syntax: public int bitCount() Para 1 min read BigInteger flipBit() Method in Java Prerequisite: BigInteger Basics The java.math.BigInteger.flipBit(index) method returns a BigInteger which is used to flip a particular bit position in a BigInteger. This method Computes (bigInteger ^ (1<<n)). The bit at index n of binary representation of the bigInteger will be flipped. That i 2 min read BigInteger clearBit() Method in Java Prerequisite: BigInteger BasicsThe clearBit() method returns a BigInteger which is used to clear a particular bit position in a BigInteger. The bit at index n of binary representation of BigInteger will be cleared means converted to zero. Mathematically we can say that it is used to calculate this 2 min read BigInteger intValue() Method in Java The java.math.BigInteger.intValue() converts this BigInteger to an integer value. If the value returned by this function is too big to fit into integer value, then it will return only the low-order 32 bits. Further there is chance that this conversion can lose information about the overall magnitude 2 min read BigInteger getLowestSetBit() Method in Java prerequisite : BigInteger Basics The java.math.BigInteger.getLowestSetBit() method returns the index of the rightmost (lowest-order) set bit of this BigInteger. It means this method returns the number of zero or unset bits to the right of the rightmost set bit. If the BigInteger contains no set bit 2 min read Like