Question: what is the most important number?
Answer: The Speed of Light: 186,282 miles per second. ...  Gravitational Constant (G): 6.67300 x 10^-11 m^3 kg^-1 s^-2. ...  Boltzmann's Constant: 1.380650 x 10^23 joule per kelvin. ...  Imaginary Unit: i. ...  Euler's Identity: e^(i*pi) = -1.