搜索号码
哈沙德。  半素数

属于这两组的第一个数字:

4,6,9,10,21,111,133,201,209,247,407,481,511,629,803,1011,1101,1141,1387,1417,1651,1679,1853,2119,2159,2353,2771,3031,3077,3097,3383,3439,3523,3749,3781,4577,4607,5149,5161,5219,5833,6331,6443,7033,7361,7501,7543,7859,8203,8227,8717,9253,10109,10213,10279,10307,10543,10727,10901,10963,11647,12181,12563,13111,13117,14093,14099,14383,14521,15001,15223,15409,15623,15689,15751,17153,17461,17777,17803,17887,18071,18299,18653,19067,19171,19601,20137,20197,20371,20603,21073,21541,21743,21907,22009,22049,22249,22711,22793,23413,24191,24449,24643,24803,25691,25699,26027,26221,26333,26519,26933,27037,27721,28489,28739,29417,29431,29831,30433,30617,30701,30901,31483,31841,32071,32167,32729,33007,33193,33241,33557,33959,34219,34411,34901,35513,35627,36431,37043,37283,38323,39007,39649,40007,40027,40201,40403,40409,40601,40717,41059,41431,42551,43079,43163,43303,43453,44081,44399,45163,45611,46111,46223,46391,47219,47989,48047,48241,48577,49097,49703,50293,50501,50507,51661,51773,52037,52187,52343,53029,53843,54301,54671,55003,55403,55423,56107,56321,56741,57971,57979,58493,58501,58811,59537,59977,60553,60881,60911,61709,61921,61969,62441,62537,62669,63053,64193,64759,65279,65501,66001,66113,66991,67031,67051,67091,67549,68333,68933,69103,69781,70103,70129,70471,70703,70813,70817,70897,71009,72587,73207,73687,74233,75197,76211,76477,76613,76763,77593,77807,78709,78851,79021,79267,79511,79957,80753,80939,81167,81211,81413,81581,82409,82441,83651,84289,84593,85307,85637,85721,86003,86159,87949,89291,90101,92123,93173,94411,94891,95449,96071,96077,96101,96121,97313,97939,98239,100051,100633,100691.

一些较大的示例: