2的64次方减一=2^64-1=(2^32-1)(2^32+1)=(2^16-1)(2^16+1)(2^32+1)=(2^8-1)(2^8+1)(2^16+1)(2^32+1)=(2^4-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)=(2-1)(2+1)(2^2+1)(2^4+1...