I'm sorry, I did not check further on that.
According to Excel help:
Excel specifications and limits
Calculation specifications
Feature Maximum limit
Number precision 15 digits
Largest number allowed to be typed into a cell 9.99999999999999E+307
Largest allowed positive number 1.79769313486231E+308
Smallest allowed negative number -2.2251E-308
Smallest allowed positive number 2.229E-308
Largest allowed negative number -1E-307
Length of formula contents 1,024 characters