2. prime, 1, 11
3. composite, 1, 2, 4, 8
4. composite, 1, 2, 13, 26
5. composite, 1, 5, 17, 85
6. prime, 1, 61
7. prime, 1, 3
8. composite, 1, 3, 9, 27
9. prime, 1, 83
10. composite, 1, 3, 9
11. prime, 1, 13
12. prime, 1, 31
13. composite, 1, 5, 25
14. prime, 1, 29
15. composite, 1, 3, 13, 39
(bottom line of factor trees...)
16. 2, 2, 2, 5
17. 2, 2, 5, 5
18. 3, 3, 3
19. 5, 3, 3, 2
20. 13, 2, 2
21. 5, 3, 2
22. 1, (2), (5), (7), 10, 14, 35, 70
23. 1, (19)
24. 1, (2), 4, 11, 22, 44
25. 1, (3), (5), 15, 25 75
26. 1, (2), 4, (17), 34, 68
27. 1, (2), (41), 82
28. 1, (2), 4, 6, 12, 24
29. 1, (2), (19), 38
