(2+1)*(2的2次方+1)*(2的4次方+1)...(2的32次方+1)等于几
原式 = ( 2^2-1 ) * ( 2^2+1 ) * ( 2^4+1 ) ... ( 2^32+1 )
= ( 2^4-1 ) ( 2^4+1 ) ... ( 2^32+1 )
= ( 2^8-1 ) ( 2^8+1 ) ... ( 2^32+1 )
= ( 2^16-1 ) ( 2^16+1 ) * ( 2^32+1 )
= ( 2^32-1 ) ( 2^32+1 )
= 2^64 - 1 = 18446744073709551615 。
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