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plaindrome  and  semiprime

First numbers that belong to both sets:

4, 6, 9, 14, 15, 22, 25, 26, 33, 34, 35, 38, 39, 46, 49, 55, 57, 58, 69, 77, 111, 115, 118, 119, 122, 123, 129, 133, 134, 145, 146, 155, 158, 159, 166, 169, 177, 178, 226, 235, 237, 247, 249, 259, 267, 278, 289, 299, 334, 335, 339, 346, 355, 358, 377, 445, 446, 447, 458, 466, 469, 478, 489, 559, 566, 579, 589, 667, 669, 679, 689, 699, 778, 779, 789, 799, 889, 899, 1111, 1114, 1115, 1119, 1126, 1133, 1135, 1137, 1138, 1139, 1145, 1147, 1149, 1157, 1159, 1167, 1169, 1177, 1189, 1199, 1226, 1227, 1234, 1238, 1247, 1255, 1257, 1267, 1299, 1333, 1337, 1339, 1345, 1346, 1347, 1349, 1355, 1357, 1366, 1369, 1379, 1389, 1457, 1466, 1469, 1477, 1478, 1555, 1569, 1577, 1589, 1678, 1679, 1689, 1779, 1799, 2227, 2229, 2234, 2245, 2246, 2249, 2257, 2258, 2279, 2335, 2359, 2369, 2446, 2449, 2455, 2458, 2469, 2479, 2489, 2558, 2559, 2566, 2567, 2569, 2577, 2578, 2589, 2599, 2669, 2779, 2899, 3334, 3337, 3338, 3349, 3369, 3377, 3379, 3446, 3455, 3459, 3466, 3489, 3566, 3569, 3578, 3579, 3589, 3599, 3667, 3669, 3679, 3777, 3778, 3799, 3899, 4449, 4467, 4469, 4478, 4479, 4489, 4499, 4555, 4559, 4569, 4577, 4579, 4589, 4666, 4667, 4677, 4678, 4699, 4777, 4778, 5567, 5578, 5579, 5599, 5666, 5667, 5677, 5699, 5777, 5789, 5799, 5899, 5999, 6667, 6677, 6778, 6799, 6889, 6999, 7778, 7779, 7799, 7899, 7999, 8889, 8899, 11111, 11114, 11126, 11127, 11129, 11138, 11146, 11147, 11157, 11167, 11179, 11189, 11199, 11227, 11233, 11237, 11246, 11249, 11255, 11267, 11269, 11278, 11333, 11335, 11337, 11338, 11345, 11347, 11357, 11359, 11366, 11377, 11378, 11379, 11389, 11449, 11459, 11469, 11477, 11479, 11499, 11555, 11558, 11559.

Some larger examples :