First numbers that belong to both sets:
21,
39,
55,
63,
65,
77,
85,
93,
111,
119,
125,
133,
143,
161,
175,
183,
189,
205,
215,
219,
221,
237,
245,
247,
253,
265,
279,
291,
299,
301,
309,
319,
323,
325,
327,
333,
335,
341,
343,
351,
365,
371,
381,
391,
399,
407,
413,
415,
437,
453,
469,
471,
485,
493,
505,
511,
517,
525,
527,
533,
535,
543,
549,
551,
559,
565,
567,
575,
583,
589,
597,
605,
623,
629,
651,
655,
669,
671,
685,
687,
689,
711,
721,
723,
731,
741,
749,
767,
777,
781,
791,
793,
799,
805,
813,
815,
831,
837,
845,
869,
871,
889,
893,
901,
903,
905,
917,
925,
927,
935,
943,
949,
959,
965,
975,
981,
985,
989,
999,
1003,
1007,
1025,
1029,
1037,
1047,
1053,
1055,
1057,
1073,
1079,
1081,
1085,
1101,
1105,
1111,
1119,
1127,
1133,
1135,
1141,
1143,
1157,
1159,
1165,
1175,
1183,
1189,
1191,
1197,
1205,
1207,
1241,
1247,
1253,
1255,
1261,
1263,
1271,
1285,
1295,
1309,
1317,
1325,
1333,
1343,
1349,
1351,
1357,
1359,
1375,
1379,
1387,
1389,
1391,
1393,
1397,
1405,
1407,
1411,
1413,
1415,
1421,
1443,
1445,
1461,
1463,
1469,
1477,
1495,
1501,
1513,
1517,
1519,
1525,
1533,
1535,
1541,
1565,
1573,
1575,
1589,
1591,
1623,
1629,
1631,
1633,
1639,
1645,
1647,
1649,
1651,
1655,
1659,
1661,
1677,
1679,
1685,
1687,
1703,
1705,
1711,
1727,
1731,
1735,
1751,
1765,
1767,
1775,
1781,
1791,
1799,
1805,
1807,
1813,
1821,
1829,
1837,
1839,
1853,
1855,
1893,
1903,
1909,
1919,
1925,
1927,
1939,
1943,
1957,
1967,
1971,
1981,
1983,
1991,
2005,
2007,
2015,
2021,
2023,
2035,
2047,
2059,
2061,
2071,
2077,
2101,
2117,
2119,
2125,
2127,
2133,
2135,
2159,
2165,
2173,
2181,
2183,
2189,
2191,
2197.
Some larger examples :
9999821,
9999829,
9999831,
9999839,
9999847,
9999853,
9999869,
9999887,
9999893,
9999903,
9999911,
9999919,
9999949,
9999959,
9999965,
9999967,
9999975,
9999983,
9999989,
9999997.