属于这两组的第一个数字：
20,30,42,56,66,70,78,102,114,138,174,186,222,246,258,282,304,308,318,354,366,402,426,438,464,474,476,498,534,550,572,582,606,618,642,644,654,678,748,762,786,812,822,834,836,894,906,942,945,978,992,1002,1038,1074,1086,1146,1148,1158,1182,1194,1266,1316,1338,1362,1374,1376,1398,1430,1434,1446,1484,1504,1506,1542,1578,1614,1626,1652,1662,1686,1698,1758,1842,1866,1870,1878,1888,1902,1986,1988,2002,2022,2082,2090,2094,2118,2154,2202,2205,2238,2274,2298,2324,2334,2382,2406,2454,2470,2492,2514,2526,2530,2586,2598,2634,2658,2694,2742,2766,2778,2802,2828,2874,2922,2946,2990,2994,2996,3018,3054,3126,3128,3138,3164,3190,3230,3246,3282,3342,3378,3410,3414,3426,3462,3465,3496,3522,3558,3594,3606,3642,3668,3678,3702,3714,3786,3836,3846,3858,3882,3918,3954,3966,4030,4038,4062,4070,4095,4098,4146,4172,4206,4216,4254,4314,4362,4398,4434,4458,4506,4510,4542,4566,4614,4638,4676,4712,4722,4730,4782,4844,4854,4866,4926,4938,4962,4974,5012,5034,5118,5142,5154,5170,5178,5262,5286,5298,5312,5322,5336,5348,5355,5442,5466,5514,5516,5574,5622,5646,5682,5704,5718,5775,5802,5826,5830,5862,5898,5946,5982,5985,6054,6078,6114,6126,6186,6198,6208,6234,6294,6306,6356,6366,6378,6392,6414,6435,6522,6524,6536,6546,6558,6582,6618,6654,6692,6702,6738,6774,6808,6906,6918,6978,7026,7028,7086,7122,7144,7158,7192,7196,7206,7245,7278,7302,7338,7364,7374,7386,7422. 一些较大的示例：
9998682,9998862,9998886,9998922,9998994,9998996,9999042,9999114,9999138,9999186,9999246,9999354,9999534,9999582,9999642,9999668,9999714,9999762,9999825,9999942.