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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?

Blaise



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