\(2^{1000}=2^4.2^{6.166}=16.64^{166}\equiv7.1\left(mod9\right)\)
\(\Rightarrow2^{1000}\) chia 9 dư 7
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\(2^{1000}=2^4.2^{6.166}=16.64^{166}\equiv7.1\left(mod9\right)\)
\(\Rightarrow2^{1000}\) chia 9 dư 7