属于这两组的第一个数字：
三,5,7,31,569,659,883,1021,1289,1873,2549,2593,2729,3359,3539,3583,3673,3853,3919,4259,4483,4933,5519,5653,5743,6553,7879,8219,8599,9343,9433,9679,9769,9859,11549,12539,12919,13009,13933,13999,14249,14563,15329,15643,15733,15889,16139,16229,16363,16453,16633,16901,17419,17599,17959,18119,18253,18521,18523,19421,19423,19961,20549,20639,20773,21493,22483,22573,22619,23203,23293,23563,23743,23833,24373,24419,24979,26263,26711,26891,27409,27791,28309,29209,29389,29569,30089,30269,30493,30853,31079,31393,32563,32719,32833,33149,33329,33619,35083,35509,35533,35801,36343,36791,37309,37691,37781,38569,38749,39043,39827,39829,40529,41203,41519,42283,42463,42643,43049,43319,43543,43609,43789,44129,44533,44621,44623,45119,45319,45343,45589,46309,47389,47659,48311,48649,49033,49121,49123,49279,49369,49391,49549,51059,51239,51419,52183,52363,52543,52901,53173,54499,55219,55333,56209,56479,56501,57221,57223,57559,58369,58391,58907,59359,59471,59627,59629,60103,60889,62129,62981,63029,63589,64153,64579,64781,65839,65927,65929,66109,66851,67189,67211,67931,68111,68449,68897,69191,69259,69931,70139,70183,70879,71263,71711,72253,73063,73849,74411,75401,76369,77269,78191,78439,78887,78977,79631,79697,80779,81701,81971,82219,82759,83233,84221,84223,85817,85931,86111,86291,86627,86629,87641,88339,88607,89597,89821,90073,90679,91153,92569,92681,92861,93133,93491,93559,93761,94007,95089,95987,96797,97159,97607,97787,98011,98731,98867,98911,99139,99721,99991,101279,101503,102763,103393,103843,104383,104473,106319,106453,106543,107509,108499,108791,108881,108949,109849,110503,110729,110819,111269,111493,112573,113159,113383,113719,114643,114799,115319,115363. 一些较大的示例：
999979621,999982391,999982547,999982637,999984281,999984371,999984617,999984707,999985247,999985967,999986171,999986261,999986641,999988217,999989297,999990581,999994157,999994159,999994651,999996071.