属于这两组的第一个数字：
5,7,101,151,181,191,313,353,373,383,727,757,797,919,10301,10501,10601,11311,12421,12821,13831,14341,14741,15551,16061,16661,17471,18181,19391,19991,30103,30703,31013,32423,33533,34543,35053,35353,36263,37573,38183,38783,39293,70207,70607,71317,71917,72727,73037,73237,73637,74047,75557,76367,77477,78487,78887,79397,79997,90709,93239,94349,94649,94949,95959,96269,96469,97879,98389,1035301,1055501,1074701,1092901,1093901,1114111,1117111,1134311,1150511,1153511,1175711,1177711,1178711,1190911,1193911,1196911,1201021,1208021,1221221,1242421,1243421,1245421,1262621,1268621,1280821,1281821,1286821,1287821,1300031,1303031,1327231,1328231,1343431,1360631,1362631,1363631,1411141,1412141,1437341,1452541,1456541,1490941,1496941,1513151,1532351,1535351,1550551,1551551,1556551,1557551,1572751,1579751,1594951,1597951,1598951,1600061,1609061,1628261,1640461,1643461,1646461,1660661,1684861,1685861,1688861,1703071,1707071,1748471,1761671,1764671,1831381,1832381,1851581,1853581,1856581,1876781,1878781,1879781,1895981,1917191,1930391,1936391,1951591,1952591,1957591,1958591,1970791,1976791,1993991,1995991,1998991,3016103,3072703,3073703,3075703,3091903,3095903,3103013,3106013,3127213,3140413,3160613,3166613,3181813,3187813,3222223,3223223,3228223,3241423,3245423,3260623,3267623,3283823,3285823,3286823,3288823,3310133,3315133,3319133,3331333,3337333,3343433,3353533,3365633,3391933,3392933,3411143,3417143,3439343,3452543,3470743,3479743,3503053,3528253,3541453,3563653,3569653,3586853,3589853,3590953,3601063,3607063,3621263,3627263,3643463,3646463,3680863,3689863,3716173,3717173,3732373,3773773,3774773,3792973,3793973,3799973,3812183,3814183,3836383,3853583,3858583,3871783,3878783,3893983,3899983,3924293,3927293,3942493,3946493,3948493,3964693,3983893,7041407,7046407,7065607,7069607,7082807,7084807,7087807,7114117,7115117,7118117,7134317,7136317,7155517,7156517,7158517,7159517,7177717,7190917,7194917,7215127,7250527,7256527,7257527,7276727,7278727,7291927,7300037,7302037,7324237,7327237,7347437,7362637,7365637,7381837,7388837,7401047,7403047,7409047,7461647. 一些较大的示例：
9781879,9782879,9787879,9788879,9817189,9818189,9836389,9837389,9852589,9871789,9896989,9916199,9918199,9919199,9931399,9932399,9935399,9938399,9957599,9978799.