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iban n.  and  Smith n.

First numbers that belong to both sets:

4, 22, 27, 121, 202, 274, 1111, 2173, 2227, 2373, 2722, 3174, 3442, 4173, 4414, 4472, 4702, 4743, 7227, 7402, 7447, 7712, 10201, 12442, 12771, 14017, 14242, 14422, 17221, 17271, 17424, 20074, 21273, 22117, 22342, 22702, 23242, 23343, 24142, 24214, 24322, 24403, 27247, 27270, 27321, 40477, 40711, 42214, 42272, 42774, 43042, 43222, 43402, 43474, 44702, 47074, 47244, 47740, 70222, 70402, 71072, 72022, 72042, 72274, 72771, 73201, 73212, 73707, 73743, 74371, 74373, 74722, 74742, 74772, 77142, 77307, 77422, 77427, 77442, 104242, 107043, 107727, 110317, 110407, 112477, 114147, 114727, 114747, 117242, 120777, 122242, 122377, 122422, 124402, 124407, 124424, 127212, 127347, 127417, 127720, 140242, 140323, 142474, 143707, 144202, 147024, 147442, 147720, 170077, 170277, 171373, 172723, 172774, 173227, 173371, 173443, 173720, 174070, 174442, 177112, 177117, 177177, 177774, 200722, 201703, 202414, 203247, 203377, 204142, 204214, 204322, 204774, 207022, 207373, 212242, 214042, 214321, 214402, 214447, 214717, 214773, 217077, 221017, 221422, 222727, 222747, 223042, 223222, 223771, 224122, 224223, 224727, 227002, 227074, 227247, 227474, 240223, 240344, 240477, 240747, 240777, 241377, 241474, 242014, 242122, 242302, 243247, 243274, 244102, 244347, 244377, 244417, 247072, 247414, 247440, 247747, 247774, 270202, 271473, 272722, 272742, 273021, 273174, 273474, 273703, 273741, 274071, 274274, 274747, 274774, 277141, 277320, 277443, 277470, 277473, 300442, 301477, 302242, 304172, 304222, 304473, 307242, 307327, 307374, 307473, 311377, 312147, 314247, 317247, 320372, 321277, 321477, 322402, 322474, 323144, 324022, 324474, 327471, 340042, 340222, 341217, 342177, 343304, 343344, 343723, 343741, 344002, 344047, 347017, 347270, 347440, 347721, 370327, 371407, 371744, 372372, 372471, 372714, 373371, 373373, 374422, 377203, 377241, 400342, 400702, 402207, 402214, 403222, 403402, 404122, 404374, 410377, 410422, 411177, 411207, 412042, 412474, 412773, 414742, 417442, 420142, 420441, 420472, 421773, 422014, 422122, 422302, 422344, 422374, 424221, 427047, 427244, 427317, 427374, 427774, 440302, 440414, 441022, 441117, 441147.

Some larger examples :