属于这两组的第一个数字：
127,251,331,701,757,809,877,905,997,1087,1199,1207,1211,1243,1259,1549,1597,1657,1777,1807,1867,1927,1969,2171,2213,2231,2263,2279,2293,2377,2465,2503,2579,2669,2789,2843,2993,3119,3163,3181,3187,3215,3239,3299,3343,3433,3505,3637,3697,3779,3877,3967,3985,4001,4063,4153,4195,4271,4311,4327,4503,4633,4649,4663,4717,4781,4811,4813,4841,5323,5405,5731,5737,5761,5771,5923,6021,6193,6247,6403,6433,6535,6539,6547,6659,6673,6731,6757,6791,6821,6853,7151,7177,7267,7297,7331,7393,7431,7747,7753,7807,7811,7813,7841,8031,8111,8257,8287,8387,8399,8411,8429,8467,8527,8563,8621,8849,8861,8915,8921,9101,9307,9371,9457,9517,9557,9613,9641,9929,10021,10121,10235,10237,10253,10327,10357,10391,10451,10511,10513,10553,10697,10781,10949,11015,11081,11105,11141,11231,11279,11317,11335,11347,11411,11533,11541,11593,11743,11771,11789,11801,11857,11909,11921,12191,12239,12251,12431,12517,12595,12805,12877,12929,12941,13001,13091,13093,13217,13351,13451,13589,13603,13859,13897,13961,14047,14077,14143,14375,14381,14407,14437,14489,14531,14533,14605,14611,14917,14921,14975,14981,15041,15071,15101,15113,15121,15223,15349,15359,15373,15401,15521,15551,15607,15853,15997,16031,16109,16117,16361,16507,16543,16559,16629,16727,16783,16867,17039,17047,17077,17089,17113,17137,17229,17257,17305,17429,17467,17489,17579,17593,17669,17735,17827,17861,17977,18033,18089,18211,18307,18427,18487,18565,18611,18613,18637,18787,18817,18889,18897,18959,18971,19057,19093,19139,19273,19345,19361,19483,20113,20287,20383,20467,20617,20623,20651,20653,20693,20707,21037. 一些较大的示例：
9999311,9999407,9999453,9999463,9999487,9999517,9999539,9999607,9999613,9999727,9999775,9999791,9999817,9999823,9999851,9999929,9999943,9999967,9999983,9999997.