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congruent n.  and  iban n.

First numbers that belong to both sets:

7, 14, 20, 21, 22, 23, 24, 41, 47, 70, 71, 77, 101, 102, 103, 110, 111, 112, 117, 120, 124, 127, 141, 142, 143, 173, 174, 207, 210, 212, 214, 220, 221, 222, 223, 224, 240, 244, 247, 270, 271, 277, 301, 302, 303, 310, 311, 312, 317, 320, 323, 327, 340, 341, 342, 343, 344, 371, 372, 373, 374, 404, 407, 410, 412, 414, 421, 422, 423, 440, 442, 444, 447, 470, 471, 472, 477, 700, 701, 702, 703, 710, 711, 717, 720, 721, 723, 724, 727, 741, 742, 743, 773, 774, 777, 1003, 1007, 1012, 1014, 1020, 1021, 1022, 1023, 1040, 1044, 1047, 1070, 1071, 1073, 1077, 1101, 1102, 1103, 1104, 1110, 1111, 1112, 1117, 1120, 1122, 1127, 1140, 1141, 1142, 1143, 1144, 1172, 1173, 1174, 1201, 1204, 1207, 1212, 1214, 1217, 1221, 1222, 1223, 1224, 1240, 1241, 1242, 1244, 1247, 1270, 1271, 1272, 1277, 1300, 1301, 1302, 1303, 1304, 1310, 1311, 1317, 1320, 1321, 1327, 1340, 1341, 1342, 1343, 1344, 1372, 1373, 1374, 1400, 1404, 1407, 1411, 1412, 1414, 1421, 1422, 1423, 1443, 1447, 1470, 1471, 1472, 1477, 1701, 1702, 1703, 1704, 1710, 1711, 1717, 1720, 1724, 1727, 1741, 1742, 1743, 1744, 1770, 1773, 1774, 2000, 2004, 2007, 2012, 2014, 2020, 2021, 2022, 2023, 2040, 2044, 2047, 2070, 2071, 2072, 2077, 2100, 2101, 2102, 2103, 2104, 2110, 2111, 2117, 2127, 2140, 2141, 2142, 2143, 2144, 2170, 2172, 2173, 2174, 2200, 2201, 2204, 2207, 2214, 2221, 2222, 2223, 2244, 2247, 2270, 2271, 2272, 2273, 2277, 2300, 2301, 2302, 2303, 2310, 2311, 2317, 2320, 2324, 2327, 2340, 2341, 2342, 2343, 2373, 2374, 2400, 2407, 2414, 2420, 2421, 2422, 2423, 2424, 2447, 2470, 2471, 2477, 2701, 2702, 2703, 2710.

Some larger examples :