Speed of Light squared is the light square our 4D world exsists in.
They hypotenuse of that square - 423,970,560 m/s^2 is the Mass radius for 1 KG of uncompressed area of mass.
The ratio to speed of light is 1.414213562. The amount of radius beyond the light square is the Mass energy link beyond our 4D world to Fractal Space.