(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1=
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利用(x+1)(x-1)=x^2-1
左边乘以(2-1)=1
变成2^128-1+1=2^128
左边乘以(2-1)=1
变成2^128-1+1=2^128
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(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
=(2^4-1)(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
````````
=2^128-1+1
=2^128
=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
=(2^4-1)(2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)(2^64+1)+1
````````
=2^128-1+1
=2^128
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