Pi, Natural Logarithm Base e
Pi
Input π by pressing (π).
π is displayed as 3.141592654, but π = 3.1415926535897932384626 is used for internal calculations.
Natural Logarithm Base e
Input e by pressing (e).
Natural Logarithm Base e is displayed as 2.718281828, but e = 2.7182818284590452353602 is used for internal calculations.