Search a number
brilliant n.  and  heptagonal n.

First numbers that belong to both sets:

403, 697, 2059, 25351, 29539, 31753, 74563, 96727, 130759, 144841, 164737, 191407, 196981, 310993, 377719, 393427, 2543689, 2563903, 2604571, 2749429, 2855299, 2984983, 3006877, 3117547, 3604201, 3700897, 3898129, 4074907, 4151869, 4229551, 4360621, 5102959, 5131573, 5275843, 5481181, 6027193, 6405601, 6469789, 6566671, 6696967, 7163083, 7196977, 7299139, 7891657, 8655511, 8805007, 8917969, 9031651, 9338323, 9493579, 9728863, 10698799, 11158753, 11456491, 11585293, 12240103, 12507067, 13003981, 13187077, 13697191, 14312533, 14843767, 14892541, 15884821, 16805233, 17013289, 17170171, 17327773, 17911807, 18396853, 18888379, 19442119, 19553827, 19609801, 20459011, 23053867, 23236429, 24597217, 25292131, 28437763, 29458573, 29871937, 31129309, 31199923, 32053531, 32701297, 33063967, 33721813, 34163977, 35507749, 36037327, 36494371, 37108243, 37804969, 38351347, 253446799, 266292121, 267118417, 273356437, 275661751, 277133809, 280937101, 283913137, 287762509, 289051393, 290558731, 293585167, 297499339, 301000363, 302098633, 308952547, 311403061, 312296557, 314311603, 317008411, 317684413, 326995267, 333431179, 340863307, 341096881, 341564269, 342265951, 348141301, 348849703, 350031973, 353828677, 356450791, 357167593, 358124449, 362205367, 364375213, 365825377, 366551539, 369463387, 371898727, 375321643, 376302499, 382709263, 382956757, 385684471, 386430073, 386678767, 388920613, 397700503, 399468241, 402507769, 403015477, 406833487, 410925871, 419431093, 425671429, 429595039, 430381921, 434063557, 437496259, 451631041, 452706937, 460816957, 463264003, 467083399, 468725083, 470644021, 475320619, 483908053, 492291673, 493977037, 495665281, 500747293, 503865727, 510703183, 512706121, 514139191, 522779611, 528289117, 534412171, 534997159, 537926899, 541158853, 541453147, 552695599, 557165209, 568267207, 573707779, 586196953, 587422609, 588956479, 590799763, 592953901, 597583111, 603783391, 605961049, 619109317, 620053879, 624787489, 625419997, 634946017, 644865211, 647759377, 651305491, 655185019, 664282051, 674098471, 675084073, 676728343, 679033681, 680022883, 684979693, 692948029, 693614137, 693947311, 694947313, 700627591, 708012859, 713070469, 720860431, 724941559, 734166217, 749670247, 751056223, 754874257, 756265033, 758353597, 763587607, 764636569, 772702531, 774109627, 775165789, 780457399, 781517881, 784349353, 787540879, 799298581, 801803839, 808983319, 814388929, 816917707, 829620397, 832902643, 833267737, 837289051, 839853109, 851624437, 857540821, 859393891, 860506693, 868316467, 874290451, 899908363, 902566501, 903326689, 905989867, 909419713, 910182781, 919748131, 925126567, 926281129, 930134869, 932064739, 942520597, 943685959, 950693251, 960076627, 968324881, 979377433, 981357703, 994876579, 999670027.