java-tutorials/java-numbers-2/src/main/java/com/baeldung/lcm/BigIntegerLCM.java

package com.baeldung.lcm;

import java.math.BigInteger;

public class BigIntegerLCM {

    public static BigInteger lcm(BigInteger number1, BigInteger number2) {
        BigInteger gcd = number1.gcd(number2);
        BigInteger absProduct = number1.multiply(number2).abs();
        return absProduct.divide(gcd);
    }

}