5. Подчеркните простое число.
21, 57, 13, 25
9, 12, 15, 29
45, 53, 100, 65
31, 96, 57, 63
37, 69, 93, 81
15, 23, 21, 33
21, 25, 57, 83
17, 24, 45, 63
18, 59, 51, 81
42, 35, 97, 39
205, 233, 411, 513
309, 303, 315, 359
507, 573, 587, 591
632, 631, 675, 693
809, 813, 862, 873​