BitXor[, , ... ] gives the bitwise XOR of the integers .
Integer mathematical function (see Section A.3.10).
BitXor[, , ... ] yields the integer whose binary bit representation has ones at positions where an odd number of the binary bit representations of the have ones. For negative integers BitXor assumes a two's complement representation. See The Mathematica Book on the web: Section 3.2.4. See also: BitAnd, BitOr, BitNot, Xor, IntegerDigits.