First numbers that belong to both sets:
12,
20,
24,
36,
40,
48,
56,
60,
72,
80,
84,
88,
96,
100,
104,
108,
112,
120,
132,
140,
144,
156,
160,
168,
176,
180,
192,
196,
200,
204,
208,
216,
220,
224,
228,
240,
252,
260,
264,
272,
276,
280,
288,
300,
304,
308,
312,
320,
324,
336,
340,
348,
352,
360,
364,
368,
372,
380,
384,
392,
396,
400,
408,
416,
420,
432,
440,
444,
448,
456,
460,
464,
468,
476,
480,
492,
500,
504,
516,
520,
528,
532,
540,
544,
552,
560,
564,
572,
576,
580,
588,
600,
608,
612,
616,
620,
624,
636,
640,
644,
648,
660,
672,
680,
684,
696,
700,
704,
708,
720,
728,
732,
736,
740,
744,
748,
756,
760,
768,
780,
784,
792,
800,
804,
812,
816,
820,
828,
832,
836,
840,
852,
860,
864,
868,
876,
880,
888,
896,
900,
912,
920,
924,
928,
936,
940,
945,
948,
952,
960,
968,
972,
980,
984,
992,
996,
1000,
1008,
1020,
1032,
1036,
1040,
1044,
1056,
1060,
1064,
1068,
1080,
1088,
1092,
1100,
1104,
1116,
1120,
1128,
1140,
1144,
1148,
1152,
1160,
1164,
1176,
1180,
1184,
1188,
1200,
1204,
1212,
1216,
1220,
1224,
1232,
1236,
1240,
1248,
1260,
1272,
1280,
1284,
1288,
1296,
1300,
1308,
1312,
1316,
1320,
1332,
1340,
1344,
1352,
1356,
1360,
1368,
1372,
1376,
1380,
1392,
1400,
1404,
1408,
1416,
1420,
1428,
1440,
1452,
1456,
1460,
1464,
1472,
1476,
1480,
1484,
1488,
1496,
1500,
1504,
1512,
1520,
1524,
1536,
1540,
1548,
1560,
1568,
1572,
1580,
1584,
1596,
1600,
1608,
1620,
1624,
1632,
1640,
1644,
1652,
1656,
1660,
1664,
1668,
1672,
1680,
1692,
1696,
1700,
1704,
1708,
1716,
1720,
1728,
1736,
1740,
1752,
1760,
1764,
1768,
1776,
1780,
1788,
1792.
Some larger examples :
49999884,
49999896,
49999900,
49999904,
49999908,
49999920,
49999924,
49999928,
49999932,
49999936,
49999940,
49999944,
49999956,
49999960,
49999964,
49999968,
49999976,
49999980,
49999992,
50000000.