√2 = 1.414213562373095...
The square root of 2 is the positive number that when multipled by itself yields 2. The square root of 2 is an irrational number, so it can't be represented in a finite sequence of digits.
When it's rounded off, it's approximately 1.414.
the square route of 2 will carry on forever, but the longest people have found is: 1.41421356237