属于这两组的第一个数字：
三,5,101,353,373,383,797,11311,12821,13331,14741,17471,18181,19991,30103,30203,30803,31013,34543,34843,35053,35153,35353,35753,38183,38783,39293,70607,71317,72727,73237,73637,75557,78887,79397,79997,90709,93239,93739,94049,94349,94649,94949,95959,96269,96469,97379,97879,98389,1003001,1043401,1055501,1074701,1082801,1085801,1093901,1126211,1134311,1145411,1153511,1163611,1175711,1183811,1190911,1201021,1208021,1215121,1235321,1242421,1243421,1250521,1257521,1268621,1273721,1276721,1281821,1286821,1300031,1303031,1311131,1317131,1327231,1343431,1360631,1371731,1409041,1411141,1412141,1437341,1447441,1456541,1461641,1496941,1508051,1513151,1532351,1548451,1556551,1557551,1565651,1594951,1598951,1609061,1611161,1616161,1628261,1633361,1643461,1646461,1658561,1684861,1685861,1712171,1714171,1737371,1755571,1777771,1802081,1824281,1829281,1831381,1832381,1842481,1851581,1878781,1881881,1883881,1884881,1903091,1908091,1909091,1924291,1936391,1941491,1951591,1952591,1957591,1968691,1987891,1988891,1993991,1995991,1998991,3007003,3026203,3064603,3073703,3075703,3083803,3089803,3091903,3095903,3103013,3106013,3127213,3135313,3140413,3158513,3196913,3212123,3222223,3241423,3245423,3252523,3258523,3267623,3272723,3285823,3288823,3293923,3304033,3319133,3331333,3343433,3353533,3362633,3364633,3365633,3392933,3411143,3417143,3425243,3427243,3443443,3449443,3466643,3470743,3485843,3503053,3515153,3517153,3528253,3553553,3569653,3589853,3590953,3591953,3601063,3618163,3621263,3627263,3643463,3670763,3673763,3680863,3698963,3708073,3721273,3763673,3769673,3773773,3774773,3784873,3793973,3804083,3806083,3814183,3826283,3829283,3836383,3842483,3858583,3863683,3864683,3869683,3893983,3899983,3924293,3938393,3946493,3964693,3991993,3994993,7035307,7036307,7041407,7057507,7082807,7087807,7100017,7115117,7118117,7134317,7141417,7145417,7156517,7159517,7177717,7194917,7250527,7256527,7261627,7267627,7291927,7300037,7310137,7347437,7352537,7354537,7362637,7365637,7392937,7401047,7409047,7415147,7434347,7461647,7486847,7489847,7508057,7527257,7562657,7564657,7576757,7592957,7600067,7611167,7619167,7622267,7630367. 一些较大的示例：
996878699,996929699,996949699,997393799,997474799,997737799,997818799,998111899,998121899,998171899,998202899,998282899,998565899,998666899,998979899,999272999,999434999,999676999,999686999,999727999.