First numbers that belong to both sets:
12,
24,
40,
56,
60,
80,
84,
88,
96,
104,
108,
132,
156,
180,
204,
228,
240,
252,
276,
348,
360,
372,
384,
396,
444,
448,
468,
480,
492,
504,
516,
560,
564,
600,
612,
636,
640,
672,
684,
708,
720,
732,
792,
804,
828,
852,
864,
876,
880,
896,
936,
948,
972,
996,
1040,
1044,
1056,
1068,
1116,
1164,
1176,
1200,
1212,
1224,
1236,
1248,
1260,
1284,
1308,
1332,
1344,
1356,
1360,
1368,
1408,
1440,
1476,
1520,
1524,
1548,
1572,
1620,
1632,
1644,
1656,
1664,
1668,
1680,
1692,
1788,
1812,
1824,
1840,
1884,
1908,
1920,
1944,
1956,
1980,
2000,
2004,
2016,
2076,
2088,
2124,
2148,
2160,
2172,
2176,
2196,
2208,
2232,
2240,
2292,
2316,
2320,
2340,
2364,
2388,
2412,
2432,
2480,
2532,
2556,
2560,
2628,
2640,
2664,
2676,
2688,
2700,
2724,
2748,
2772,
2784,
2796,
2844,
2868,
2892,
2904,
2944,
2952,
2960,
2976,
2988,
3012,
3060,
3084,
3096,
3120,
3156,
3168,
3204,
3228,
3240,
3252,
3276,
3280,
3324,
3360,
3372,
3384,
3396,
3420,
3440,
3456,
3516,
3552,
3684,
3712,
3732,
3744,
3756,
3760,
3804,
3816,
3936,
3968,
3972,
4032,
4044,
4056,
4080,
4128,
4140,
4164,
4188,
4224,
4236,
4240,
4248,
4284,
4308,
4320,
4392,
4404,
4476,
4480,
4500,
4512,
4548,
4560,
4596,
4668,
4720,
4736,
4764,
4788,
4812,
4824,
4860,
4880,
4896,
4908,
4928,
4992,
5028,
5040,
5052,
5088,
5112,
5148,
5172,
5196,
5220,
5248,
5256,
5268,
5280,
5292,
5316,
5360,
5388,
5472,
5484,
5504,
5520,
5532,
5556,
5580,
5604,
5664,
5680,
5688,
5748,
5760,
5796,
5824,
5840,
5844,
5856,
5892,
5976,
5988,
6000,
6016,
6036,
6048,
6108,
6144,
6160,
6240,
6252,
6276,
6320,
6408,
6432,
6492,
6528,
6564,
6624,
6640,
6660,
6684,
6720,
6732,
6756,
6784,
6804,
6816.
Some larger examples :
99444,
99456,
99492,
99516,
99552,
99564,
99600,
99712,
99732,
99744,
99756,
99760,
99804,
99828,
99840,
99904,
99920,
99936,
99948,
99968.