Divisibles
Enter a number equal or greater than 1 and 1 to N blocks will appear in a random order. Hover over a block to see which numbers are its divisors or whether that number is prime.
81
81
40
40
27
27
54
54
13
13
53
53
73
73
16
16
97
97
21
21
61
61
29
29
100
100
94
94
69
69
60
60
71
71
56
56
93
93
82
82
63
63
55
55
96
96
4
4
74
74
45
45
25
25
33
33
3
3
44
44
37
37
72
72
89
89
70
70
91
91
24
24
68
68
83
83
95
95
64
64
46
46
30
30
31
31
9
9
92
92
58
58
52
52
18
18
35
35
62
62
57
57
49
49
2
2
86
86
6
6
41
41
48
48
98
98
23
23
47
47
85
85
1
1
51
51
17
17
39
39
34
34
12
12
76
76
78
78
11
11
10
10
8
8
36
36
38
38
5
5
42
42
88
88
22
22
7
7
80
80
14
14
79
79
75
75
50
50
43
43
90
90
84
84
99
99
87
87
26
26
28
28
59
59
32
32
15
15
65
65
19
19
66
66
67
67
77
77
20
20