战术： 12481632641282565121024204840968192163843276865536131072262144524288 .
111111111(2)自右向左平方自0
=1x 201 x 211 x 221 x 231 x 241 x 251 x 261 x 27=1248163264128
=255(10
11111111=1x 201 x 211 x 221 x 231 x 241 x 251 x 261 x 27=255
1111111=127
111111=63
11111=31
1111=15
111=7
11=3
1=1
10000000=0x 200 x 210 x 220 x 230 x 240 x 250 x 261 x 27=128
1000000=0x 200 x 210 x 220 x 230 x 240 x 251 x 26=64
100000=0x 200 x 210 x 220 x 230 x 241 x 25=32
10000=0x200x210x220x23 1x24=16
1000=0x200x210x22 1x23=8
100=0x200x21 1x22=4
10=0x20 1x21=2
1=1x20=1
101.01(2)小数点时从左向右1平方
=1x 200 x 211 x 221 x 230 x2- 11 x2-2=10480.25
=13.25