请帮我一个笨笨的问题gwd 3-2 m

casualwalk

Q2:

What is the greatest prime factor of 2¹⁰⁰ - 2⁹⁶?

A. 2

B. 3

Answer C. 5

D. 7

E. 11

为何5可以是 prime factor of 2¹⁰⁰ - 2⁹⁶？请解。。感激万分， 谢谢！！！