LN function
LN returns the natural logarithm based on the constant e of a number. The constant e has a value of approximately 2.71828182845904.
Syntax
LN (number)
number is the value whose natural logarithm is to be calculated.
Example
=LN(3) returns returns the natural logarithm of 3 (approximately 1.0986).
=LN(EXP(321)) returns 321.