21, 231, 671, 703, 841, 1281, 1387, 1417, 2701, 3829, 8321, 8911, 10933, 13019, 14091, 20591, 21667, 25909, 43213, 43273, 45221, 45449, 47197, 48133, 51319, 60551, 74089, 76861, 79381, 80137, 84941, 86331, 91669, 106491, 109981, 110293, 111361, 113401
