属于这两组的第一个数字：
2,7,11,131,151,181,191,313,727,757,787,919,929,10301,10501,10601,11411,12421,12721,13831,13931,14341,15451,15551,16061,16361,16561,16661,17971,18481,19391,19891,30403,30703,31513,32323,32423,33533,36263,36563,37273,37573,38083,70207,70507,71917,72227,73037,74047,74747,76367,76667,77377,77477,77977,78487,78787,79697,91019,93139,94849,96769,97579,98689,1008001,1022201,1028201,1035301,1062601,1065601,1092901,1114111,1117111,1120211,1123211,1129211,1150511,1160611,1177711,1178711,1180811,1186811,1193911,1196911,1212121,1218121,1221221,1245421,1253521,1262621,1278721,1280821,1287821,1328231,1333331,1335331,1338331,1362631,1363631,1374731,1390931,1407041,1422241,1444441,1452541,1463641,1464641,1469641,1486841,1489841,1490941,1520251,1535351,1542451,1550551,1551551,1572751,1579751,1580851,1583851,1589851,1597951,1600061,1630361,1640461,1654561,1657561,1660661,1670761,1688861,1695961,1703071,1707071,1730371,1734371,1748471,1761671,1764671,1793971,1805081,1820281,1823281,1826281,1853581,1856581,1865681,1876781,1879781,1880881,1895981,1917191,1930391,1958591,1963691,1969691,1970791,1976791,1981891,1982891,1984891,3001003,3002003,3016103,3065603,3072703,3155513,3160613,3166613,3181813,3187813,3193913,3198913,3211123,3218123,3223223,3228223,3233323,3236323,3256523,3260623,3283823,3286823,3291923,3305033,3307033,3310133,3315133,3321233,3329233,3337333,3368633,3380833,3391933,3400043,3424243,3439343,3441443,3444443,3447443,3452543,3460643,3479743,3487843,3541453,3558553,3563653,3586853,3594953,3607063,3635363,3646463,3689863,3709073,3716173,3717173,3722273,3728273,3732373,3743473,3746473,3762673,3765673,3768673,3781873,3792973,3799973,3812183,3853583,3867683,3871783,3878783,3913193,3916193,3918193,3927293,3931393,3942493,3948493,3970793,3983893,3997993,3998993,7014107,7046407,7065607,7069607,7073707,7079707,7084807,7093907,7096907,7114117,7129217,7136317,7155517,7158517,7190917,7215127,7226227,7246427,7249427,7257527,7276727,7278727,7302037,7314137,7324237,7327237,7381837,7388837,7403047,7436347,7439347,7452547,7466647,7472747,7475747,7485847,7493947,7507057. 一些较大的示例：
995757599,995777599,996121699,996464699,996656699,996989699,997030799,997111799,997464799,997555799,997909799,997969799,998333899,998757899,998898899,998939899,999070999,999212999,999454999,999565999.