(2²+1)(2&sup4+1)(2&sup8+1)(2¹6+1)(2³2+1)
问题描述:
(2²+1)(2&sup4+1)(2&sup8+1)(2¹6+1)(2³2+1)
答
令A=上式,则(2^2-1)A=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)=(2^4-1))(2^4+1)(2^8+1)(2^16+1)(2^32+1)=(2^8-1)(2^8+1)(2^16+1)(2^32+1)=(2^16-1)(2^16+1)(2^32+1)=(2^32-1)(2^32+1)=2^64-1A=(2^64-1)/3