Explain escape speed. On what factors does escape velocity not depend?

(N/A) Escape speed is defined as the minimum speed required for an object to be projected vertically upwards from the surface of a planet or moon so that it escapes the gravitational influence of that body and never returns to the surface.
The formula for escape velocity $(v_e)$ is given by:
$v_e = \sqrt{\frac{2GM}{R}}$
where $G$ is the universal gravitational constant,$M$ is the mass of the planet,and $R$ is the radius of the planet.
Escape velocity does not depend on the following factors:
$1$. The mass of the object being projected $(m)$.
$2$. The direction of projection (as long as it is not directed into the planet).
$3$. The location on the planet's surface from where it is projected.