属于这两组的第一个数字：
三,7,11,17,41,43,71,73,101,103,107,227,241,271,311,347,421,1021,1277,1301,1303,1321,1427,1721,1723,2027,2111,2141,2143,2311,2341,2711,3001,3121,3301,3371,3373,4001,4003,4021,4127,4217,4241,4243,4271,4273,4421,4423,4721,4723,7127,7211,7307,10007,10141,10271,10273,10301,10303,10427,10711,11071,11117,11171,11173,11701,11717,11777,12041,12043,12071,12073,12107,12241,12377,14011,14321,14323,14447,17027,17207,17417,17747,20021,20023,20147,20441,20443,20477,20717,20747,20771,20773,21011,21017,21317,21377,22111,22271,22273,22277,22741,23027,23041,23201,23203,23371,23741,23743,24107,24371,24373,24421,27107,27241,27407,40127,40427,41141,41143,41177,41201,41203,41411,42017,42071,42073,42221,42223,42407,42701,42703,43321,44027,44201,44203,44701,44771,44773,47147,47417,47701,47711,47741,47743,47777,70001,70003,70121,70123,70141,70201,71327,71341,71411,71471,71473,71711,72101,72103,72221,72223,72227,72271,74101,74201,74203,74411,74717,77417,77477,77711,101111,101117,101207,101747,102001,102077,102101,102103,102301,102407,103421,103423,104147,104311,104471,104473,107071,107101,107717,110321,110323,110477,111121,111227,111271,112247,114041,114043,117041,117043,117241,117371,117373,117701,117703,120047,120077,121021,121171,121441,122027,122041,122147,122201,122203,122207,122321,122323,122401,122741,122743,123377,124121,124123,124247,124301,124303,124427,124771,127217,127247,127711,140071,140417,141221,141223,141707,143111,144071,144073,144407,147211,147227,170101,170371,171047,171077,171401,171403,172171,172217,172421,172423,172441,173021,173023,173207,173741,173743,173777,174017,174047,174077,177011,177211,201121,201211,201401,201403,202127,203207,203311,203321,203323,203341,203417,203771,203773. 一些较大的示例：
770311,770447,771011,771047,771301,771401,771403,772001,772003,772441,773021,773023,773027,773207,773777,774001,774071,774073,777011,777421.