> > How good a match do you need? If you REALLY need to know exactly > > what it is, pen and paper might be your best bet. > > > > 16^16 = 18446744073709551616 > > > > Square that, and there's your answer. > > > > Mike H. > > Is't it 256 ^ 16 ? Sure, which is (16^16)^2, or 16^32, which is the original way it was written. Remember, when multiplying two exponentials of the same base, they exponents add. (2^2)*(2^3) = (2^5). Soooo a 32 digit hex number, maxed out, is 16^32, but Windows calc could only give me precision to 16 digits, so break it in half and grind through on paper. Or use a different calculator. ;-) I'd bet Excel or Google would give me the right answer. Mike H. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist