What is the greatest prime factor of $4^{17}-2^{28}?$

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by M7MBA » Sun Jan 31, 2021 1:00 pm

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What is the greatest prime factor of $4^{17}-2^{28}?$

A. 2
B. 3
C. 5
D. 7
E. 11

Answer: D

Source: GMAT Prep

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