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iban n.  and  semiprime

First numbers that belong to both sets:

4, 10, 14, 21, 22, 74, 77, 111, 121, 122, 123, 141, 142, 143, 177, 201, 202, 203, 214, 217, 221, 247, 274, 301, 302, 303, 314, 321, 323, 327, 341, 371, 377, 403, 407, 411, 417, 422, 427, 447, 471, 473, 703, 707, 717, 721, 723, 771, 1003, 1007, 1011, 1027, 1041, 1042, 1043, 1047, 1073, 1077, 1101, 1111, 1114, 1121, 1141, 1142, 1147, 1174, 1177, 1202, 1203, 1207, 1211, 1214, 1227, 1241, 1243, 1247, 1271, 1273, 1317, 1322, 1343, 1347, 1371, 1401, 1402, 1403, 1411, 1417, 1441, 1473, 1477, 1703, 1707, 1711, 1714, 1717, 1727, 1774, 2021, 2041, 2042, 2047, 2071, 2073, 2077, 2101, 2102, 2103, 2117, 2122, 2123, 2127, 2147, 2171, 2173, 2174, 2177, 2201, 2217, 2227, 2271, 2302, 2307, 2317, 2321, 2323, 2327, 2342, 2374, 2402, 2407, 2427, 2443, 2471, 2474, 2701, 2721, 2722, 2723, 2743, 2747, 2771, 2773, 3007, 3017, 3022, 3027, 3043, 3047, 3071, 3073, 3077, 3101, 3103, 3107, 3117, 3127, 3142, 3143, 3147, 3173, 3202, 3207, 3214, 3223, 3227, 3241, 3242, 3247, 3273, 3274, 3277, 3314, 3317, 3327, 3341, 3377, 3401, 3403, 3421, 3427, 3442, 3443, 3473, 3707, 3711, 3721, 3722, 3742, 3743, 3747, 3777, 4022, 4043, 4101, 4103, 4117, 4121, 4141, 4143, 4171, 4174, 4207, 4222, 4223, 4227, 4247, 4274, 4303, 4307, 4317, 4321, 4322, 4341, 4343, 4377, 4411, 4414, 4417, 4427, 4442, 4443, 4471, 4474, 4701, 4702, 4711, 4714, 4717, 4727, 4741, 4742, 4747, 4771, 4777, 7003, 7017, 7022, 7023, 7041, 7071, 7073, 7111, 7114, 7117, 7123, 7141, 7142, 7143, 7147, 7171, 7201, 7214, 7217, 7223, 7241, 7271, 7273, 7274, 7277, 7303, 7311, 7323, 7327, 7341, 7342, 7343, 7373, 7377, 7401, 7402, 7403, 7421, 7423, 7427, 7441, 7447, 7471, 7702, 7711.

Some larger examples :