What's the Composite
1, 19, 43, 160
160: (2 x 80)
21
1, 3, 7, 21
27
33
63 and 70
7
65, 60, 55, 50, ... (next two)
45, 40
31, 41, 51, 61
51: (3 x 17)
16
1, 2, 4, 8, 16
36
22 ⋅ 32
24 and 42
6
4, 11, 18, 25, 32, ... (next three)
39, 46, 53
71, 73, 77, 79
77: (7 x 11)
30
1, 2, 3, 5, 6, 10, 15, 30
42
2 x 3 x 7
60 and 48
12
1,600, 800, 400, 200, ... (next three)
100, 50, 25
13, 67, 89, 157
None
48
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
90
2 ⋅ 32 ⋅ 5
54 and 81
27
2, 6, 18, 54, ... (next two)
162, 486
11; 101; 1,001; 10,111
1,001: (7 x 143)
100
1, 2, 4, 5, 10, 20, 25, 50, 100
196
22 x 72
180 and 600
60
25, 29, 24, 28, 23, ... (next three)
27, 22, 26