Re: [math-fun] 2015 with the other six digits

Bill Gosper:

10*9*8*7/6/5*4*3-2+1 When's the soonest year this becomes impossible?

If we insist on only one the four operators (+-*/) as inbetweens, 2016 is already impossible. The cheat is to allow concatenation as well. This gives us up to (but not including) 2102, even if the concatenation is disallowed after the 10 (to force the saying of 'ten').