Using constant number e as Base logarithms is called Nature logarithms, denoted ln^N(N>0).

It means that the limit can be reached by continuously doubling growth per unit time.

Nature logarithms Base e is given by one important limit. We Definition: When x tends to infinity, lim(1+1/x)^x=e.

e is one infinite non-cyclic small number, its value is about be tantamount to 2.718281828…, it is one beyond number.