.最大:划去1-8 , 8 个 划去1011181, 19个 划去2021282, 19最小:划去2-91 , 9个 划去11192 19个 划去21.. 293 19个 划去
308237529600用电脑计算的
304140932017133780436126081660647688443776415689605129999999991000
616475059200