属于这两组的第一个数字：
5,6,24,125,375,376,501,624,749,751,999,1249,3751,4375,4999,8751,9375,9999,18751,31249,40625,49999,59375,68751,90625,99999,109375,109376,218751,499999,609375,718751,890624,999999,2109375,2890624,4218751,4999999,7109375,7890625,9218751,9999999.