cough https://www.google.com/#&q=231+in+base+2&oq=27+in+base+2 https://www.google.com/#&q=231+in+base+2&oq=27+in+ba... Or, you know, Windows Calculator? Or Gca

cough https://www.google.com/#&q=231+in+base+2&oq=27+in+base+2 https://www.google.com/#&q=231+in+base+2&oq=27+in+ba... Or, you know, Windows Calculator? Or Gcalctool? Or, if you want overkill: http://www.wolframalpha.com/input/?i=231+in+base+2 http://www.wolframalpha.com/input/?i=231+in+base+2