The efficiency of application to long algorithms and large datasets is a function of available computing power.  Certain problems in coding theory can be reduced to homomorphic calculation, but it takes petabytes of data to represent the solution space.<p>I would recommend Moore&#x27;s Law as an approximate formula which is useful for guessing what year you will be able to run programs at home on your personal computer.  These days, conservative estimates for the number of transistors on a chip should double every 2 years.