计算：2(3+1)(3^2+1)(3^4+1)……(3^32+1)+1

2(3+1)(3^2 +1)(3^4 +1)(3^8 +1).....(3^32 +1)+1.

2(3+1)(3^2 +1)(3^4 +1)(3^8 +1).....(3^32+1)+1

=(3-1)(3+1)(3^2 +1)(3^4 +1).....(3^32+1)+1

=(3^2-1)(3^2+1)(3^4+1).....(3^32+1)+1

=(3^4-1)(3^4+1)(3^8+1).....(3^32+1)+1

=.....

=3^64-1+1

=3^64