Date: Feb 17, 2013 4:08 AM
Author: Blaise F Egan
Subject: Low precision exponentiation

I am trying to evaluate 2.5^125 to high precision. 

R gives 5.527147875260445183346e+49 as the answer but Mathematica with N[2.5^125,30] gives 5.52715*10^49 and says that is to machine precision.

I am inexperienced at Mathematica. Am I doing something silly?