Yeah ... I was suggesting that a more sophisticated algorithm for arithmetic on very large integers could eliminate substantial similarities, leaving the 'zone

Yeah ... I was suggesting that a more sophisticated algorithm for arithmetic on very large integers could eliminate substantial similarities, leaving the 'zone of difference'. A limited 'bit window' needs to be more versatile. For example, a while back a man got a bill for $35 billion ... that wouldn't happen with more intelligence built into routines. (OUR minds look at 999...999 and 999...997 and see quickly what can be eliminated.)