合数查询
8
498414到498519的合数
498414
498415
498416
498417
498418
498419
498420
498421
498422
498423
498424
498425
498426
498427
498428
498429
498430
498431
498432
498433
498434
498435
498436
498437
498438
498440
498441
498442
498443
498444
498445
498446
498447
498448
498449
498450
498451
498452
498453
498454
498455
498456
498457
498458
498459
498460
498462
498463
498464
498465
498466
498468
498470
498471
498472
498473
498474
498475
498476
498477
498478
498479
498480
498481
498482
498483
498484
498485
498486
498487
498488
498489
498490
498491
498492
498494
498495
498496
498498
498499
498500
498501
498502
498503
498504
498505
498506
498507
498508
498509
498510
498511
498512
498513
498514
498515
498516
498517
498518
498519
合数是至少有三个正因数的自然数，奇合数构成算术级数定理（狄利克雷定理）。卡迈克尔数是绝对伪素数，满足对所有基数的费马同余。合数分解是公钥密码分析的核心问题，未被证明是否属于NP完全问题。最小合数为4，唯一偶合数为2的例外。