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平衡的n。  双素数

属于这两组的第一个数字:

11,19,41,139,149,197,569,601,617,659,661,809,2141,2381,2659,2713,2729,3461,6791,6793,6947,6959,7487,7559,7877,7949,8087,8089,8219,8429,8431,8537,8539,8597,8599,8627,8629,8819,8821,8861,8969,8971,8999,9011,9013,9043,9281,9419,9421,9433,9767,9929,10009,10271,10301,10331,10333,10457,10711,10891,11057,11119,11161,11351,11353,11489,11699,11831,11833,11969,12041,12071,12161,12379,12823,13001,13009,13217,13339,13397,13711,13721,13723,13831,13901,13903,13997,14083,14387,14389,14447,14449,14561,14627,14629,14867,14869,15137,15359,15361,15641,15649,15733,15887,15889,16061,16063,16139,16229,16831,16903,17029,17599,17839,17911,18289,18311,18313,18523,33149,33749,33769,34127,34157,34259,34261,34471,34589,34649,34757,35051,35053,35449,35507,35509,35531,35533,35731,35899,36011,36013,36529,37199,37337,37361,37547,37549,37589,37781,37991,38569,38609,38669,39239,39509,39841,40037,40529,41143,41179,41203,41387,41389,41519,42071,42283,42409,42571,42643,43321,43399,43543,43577,43609,43783,43787,43789,44089,44131,44201,45341,46181,46349,47147,47149,47657,47713,47777,47809,48649,49277,49367,49529,49991,50021,50129,50263,50459,50461,50969,51343,51479,51769,52363,53279,53549,53593,53609,53899,54419,54421,54497,54539,54541,54917,55049,55339,55619,55621,55633,55819,57529,57557,57899,57901,58153,58391,58439,58451,58453,59011,59419,59443,59669,60169,61469,62981,63649,64577,131711,131837,132047,132527,132857,133979,133981,134087,134837,135017,135391,135599,135911,136399,136603,136651,136751,136811,136813,136859,136861,137339,137341,137909,138179,138181,138451,138571,138797,139201,140729,140761,140891,140893,141221,141499,141677,141767,142157,142607,142697.

一些较大的示例: