属于这两组的第一个数字：
251,443,1019,1031,1103,1289,1499,1811,1889,2039,2069,2273,2351,2399,2543,2549,2699,2741,2819,2939,3329,3389,3491,3623,3761,3821,3851,3911,4211,4271,4391,4409,4733,4793,4871,5039,5081,5171,5231,5303,5333,5399,5441,5501,5639,5711,5741,5849,6053,6101,6113,6131,6173,6269,6323,6329,6449,6491,6521,6551,6581,6761,6899,6983,7043,7103,7121,7151,7193,7211,7349,7433,7541,7643,7649,7691,7823,7841,7883,7901,8069,8093,8111,8243,8273,8513,8663,8693,8951,8969,9029,9059,9221,9293,9371,9419,9473,9479,9539,9629,9689,10061,10091,10163,10253,10271,10313,10331,10529,10589,10613,10691,10709,10733,10781,10799,10883,11171,11321,11369,11393,11471,11519,11549,11579,11699,11783,11801,11813,11831,11909,11939,12011,12041,12101,12203,12263,12329,12653,12671,12791,12821,12899,12923,12959,13001,13049,13229,13313,13451,13463,13553,13619,13649,13763,13883,13901,13913,14009,14081,14153,14159,14249,14303,14321,14489,14561,14621,14669,14699,14741,14783,14831,14879,14939,15101,15161,15173,15233,15269,15401,15569,15629,15773,15791,15803,15923,16001,16091,16253,16301,16421,16493,16553,16673,16811,16823,16883,16931,17159,17183,17291,17333,17351,17579,17669,17681,17939,17981,18041,18149,18191,18233,18341,18443,18461,18731,18773,18803,18899,19163,19301,19319,19373,19391,19433,19553,19559,19661,19709,19751,19889,19913,19919,19991,20063,20249,20369,20393,20411,20441,20693,20753,20759,20771,20789,20879,20921,20939,20963,21011,21089,21149,21179,21221,21341,21383,21419,21611,21701,21713,21803,21893,22013,22079,22133,22259,22271,22343,22349,22409,22433,22469,22481,22541,22751,22853,22943,23099,23279. 一些较大的示例：
28499,28559,28571,28643,28751,28793,28859,28901,28949,28961,29021,29033,29201,29339,29363,29453,29483,29531,29723,29873.