First numbers that belong to both sets:
21,
27,
35,
39,
49,
55,
57,
65,
77,
85,
93,
111,
115,
119,
125,
129,
133,
143,
155,
161,
169,
183,
185,
187,
189,
201,
203,
205,
209,
215,
217,
219,
221,
235,
237,
245,
247,
253,
259,
265,
275,
291,
299,
301,
305,
309,
319,
323,
327,
329,
335,
341,
343,
351,
355,
361,
365,
371,
377,
381,
385,
391,
399,
403,
407,
413,
415,
417,
425,
427,
437,
451,
453,
469,
471,
481,
485,
489,
493,
497,
505,
511,
513,
515,
517,
527,
533,
535,
539,
543,
551,
553,
559,
565,
575,
579,
583,
589,
595,
597,
605,
611,
623,
629,
633,
635,
649,
651,
655,
667,
669,
671,
685,
687,
689,
697,
707,
713,
715,
721,
723,
731,
737,
741,
749,
755,
763,
767,
777,
779,
781,
785,
791,
793,
799,
803,
805,
813,
815,
817,
831,
833,
835,
837,
845,
849,
851,
865,
869,
871,
875,
889,
893,
899,
901,
903,
905,
913,
917,
921,
923,
935,
939,
943,
949,
955,
959,
961,
965,
979,
985,
989,
993,
999,
1003,
1007,
1011,
1025,
1027,
1029,
1037,
1043,
1047,
1055,
1057,
1067,
1073,
1079,
1081,
1085,
1099,
1101,
1105,
1111,
1115,
1119,
1121,
1127,
1133,
1135,
1137,
1141,
1147,
1157,
1159,
1161,
1165,
1175,
1177,
1183,
1189,
1191,
1205,
1207,
1209,
1211,
1219,
1227,
1241,
1243,
1247,
1253,
1255,
1261,
1263,
1265,
1271,
1273,
1281,
1285,
1295,
1299,
1309,
1313,
1315,
1317,
1325,
1331,
1333,
1337,
1343,
1349,
1351,
1355,
1357,
1363,
1369,
1371,
1375,
1379,
1385,
1387,
1389,
1391,
1393,
1397,
1403,
1405,
1407,
1411,
1415,
1417,
1421,
1443,
1445,
1457,
1461,
1463,
1465,
1469,
1477,
1495,
1497,
1501,
1505,
1507,
1513,
1517,
1519,
1529.
Some larger examples :
9999905,
9999911,
9999913,
9999919,
9999921,
9999923,
9999939,
9999947,
9999949,
9999953,
9999959,
9999965,
9999967,
9999977,
9999979,
9999983,
9999989,
9999993,
9999995,
9999997.