Yea, 2017 is an amazing year for Bitcoin and whole Bitcoin community. Now I'm waiting for 5 digits 
When Bitcoin was created it was impossible to imagine that BTC price will pass 1000 dollars, so I believe that 5 digits can be reached as well 
bitcoin prices now there are over 1000USD. still likely to rise again. because there are many things that can affect the price of bitcoin today. the development of the financial sector was more positive when influenced bitcoin prices. When Bitcoin was created it was impossible to imagine that BTC price will pass 1000 dollars, so I believe that 5 digits can be reached as well