The factor by which a logarithm of a number to one base is multiplied to obtain the logarithm of the number to a new base.

对数的模。

The length of the radius vector from the origin to the point representing the number in the complex plane.

原点与复平面数点间的向量径。

The number of different numbers used in a system of modular arithmetic.

(模算术中的)模数。