BigInteger bigInt = BigInteger.Parse("1234567890123456789"); string strBigInt = bigInt.ToString();
BigInteger bigInt = 1234567890123456789; string strBigInt = bigInt.ToString("N");
BigInteger bigInt = new BigInteger(0xBEEF); string hexStr = bigInt.ToString("X");All of these examples showcase how the ToString method can be used with a BigInteger object. The System.Numerics package library is required to use the BigInteger class and its associated methods, including ToString.