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This expresses the base-10/common logarithm of positive real number 4^16,

since nothing specific is defined on its base.

Using a calculator equipped with common logarithm functions, we have

log4^16 = 16 x log(4) (= 16 x 0.6020599913…) = 9.632959861… ≈ 9.633

or using the x^n key for 4^16, we have

log(4^16) = 9.632959861… ≈ 9.633

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