First numbers that belong to both sets:
4,
9,
21,
25,
35,
39,
49,
55,
57,
65,
77,
85,
93,
111,
115,
119,
121,
129,
133,
143,
155,
161,
169,
183,
185,
187,
201,
203,
205,
209,
215,
217,
219,
221,
235,
237,
247,
253,
259,
265,
289,
291,
299,
301,
305,
309,
319,
323,
327,
329,
335,
341,
355,
361,
365,
371,
377,
381,
391,
403,
407,
413,
415,
417,
427,
437,
451,
453,
469,
471,
481,
485,
489,
493,
497,
505,
511,
515,
517,
527,
529,
533,
535,
543,
551,
553,
559,
565,
579,
583,
589,
597,
611,
623,
629,
633,
635,
649,
655,
667,
669,
671,
685,
687,
689,
697,
707,
713,
721,
723,
731,
737,
749,
755,
763,
767,
779,
781,
785,
791,
793,
799,
803,
813,
815,
817,
831,
835,
841,
849,
851,
865,
869,
871,
889,
893,
899,
901,
905,
913,
917,
921,
923,
939,
943,
949,
955,
959,
961,
965,
979,
985,
989,
993,
1003,
1007,
1011,
1027,
1037,
1043,
1047,
1055,
1057,
1067,
1073,
1079,
1081,
1099,
1101,
1111,
1115,
1119,
1121,
1133,
1135,
1137,
1141,
1147,
1157,
1159,
1165,
1177,
1189,
1191,
1205,
1207,
1211,
1219,
1227,
1241,
1243,
1247,
1253,
1255,
1261,
1263,
1271,
1273,
1285,
1299,
1313,
1315,
1317,
1333,
1337,
1343,
1349,
1351,
1355,
1357,
1363,
1369,
1371,
1379,
1385,
1387,
1389,
1391,
1393,
1397,
1403,
1405,
1411,
1415,
1417,
1457,
1461,
1465,
1469,
1477,
1497,
1501,
1507,
1513,
1517,
1529,
1535,
1537,
1541,
1555,
1565,
1569,
1577,
1585,
1589,
1591,
1603,
1623,
1631,
1633,
1639,
1641,
1643,
1649,
1651,
1655,
1661,
1673,
1679,
1681,
1685,
1687,
1691,
1703,
1711,
1713,
1727,
1731,
1735,
1739,
1751,
1763,
1765,
1769,
1781,
1793,
1799,
1803,
1807,
1817.
Some larger examples :
9999833,
9999839,
9999841,
9999849,
9999851,
9999881,
9999893,
9999903,
9999911,
9999919,
9999921,
9999939,
9999953,
9999959,
9999965,
9999967,
9999979,
9999989,
9999993,
9999997.