public String toString ()

Overriding: java.lang.Object

Returns the decimal String representation of this BigInteger. The digit-to-character mapping provided by Character.forDigit is used, and a minus sign is prepended if appropriate. (This representation is compatible with the (String) constructor, and allows for String concatenation with Java's + operator.)

Returns:  decimal String representation of this BigInteger.

See also:
Character.forDigit, BigInteger(java.lang.String)