Math Notes 121213882349 = (1212 + 1388 + 2349)3 128711132649 = (1287 + 1113 + 2649)3 162324571375 = (1623 + 2457 + 1375)3 171323771464 = (1713 + 2377 + 1464)3 368910352448 = (3689 + 1035 + 2448)3 August 21, 2017 | Science & Math