属于这两组的第一个数字：
255,345,435,455,561,595,665,705,795,805,885,957,1001,1105,1173,1235,1245,1295,1309,1335,1353,1463,1479,1495,1547,1551,1605,1615,1645,1695,1729,1749,1855,1885,1947,1955,2001,2055,2065,2091,2093,2185,2235,2261,2343,2345,2387,2397,2405,2431,2465,2505,2555,2595,2685,2703,2717,2737,2739,2755,2765,2795,2821,2829,2849,2905,2955,3009,3055,3059,3115,3145,3157,3333,3335,3367,3395,3405,3495,3515,3531,3553,3567,3585,3605,3619,3621,3655,3657,3689,3729,3731,3745,3815,3835,3855,3945,3995,4035,4071,4081,4085,4089,4123,4147,4199,4233,4255,4277,4323,4355,4395,4403,4433,4465,4505,4521,4539,4543,4611,4697,4745,4755,4795,4865,4879,4899,4917,4921,4945,4991,5015,5035,5083,5151,5205,5215,5291,5295,5365,5369,5385,5395,5423,5453,5457,5495,5511,5551,5593,5605,5621,5681,5695,5705,5709,5727,5745,5763,5781,5785,5797,5835,5845,5863,5907,5957,6055,6061,6083,6095,6097,6141,6149,6177,6205,6235,6251,6265,6285,6303,6305,6307,6365,6391,6409,6479,6501,6519,6601,6643,6645,6681,6695,6715,6721,6735,6755,6785,6815,6851,6919,6935,6955,6965,6969,7005,7021,7049,7055,7085,7163,7185,7221,7257,7259,7345,7383,7429,7469,7473,7491,7505,7545,7553,7565,7599,7635,7657,7667,7685,7689,7705,7733,7743,7777,7797,7805,7847,7885,7887,7931,7945,7955,7973,8015,8029,8041,8099,8113,8155,8177,8239,8245,8255,8283,8319,8355,8393,8395,8437,8445,8455,8481,8517,8533,8535,8569,8671,8679,8687,8695,8723,8733,8787,8789,8805,8823,8827,8877. 一些较大的示例：
9999777,9999779,9999791,9999815,9999821,9999835,9999847,9999853,9999859,9999867,9999869,9999887,9999905,9999917,9999923,9999941,9999947,9999949,9999977,9999985.