1 7 
2 13 
3 103 
4 1009 
5 10009 
6 100003 
7 1000003 
8 10000121 
9 100000039 
10 1000000009 
11 10000000033 
12 100000000003 
13 1000000000039 
14 10000000000411 
15 100000000000067 
16 1000000000000487 
17 10000000000000481 
18 100000000000000003 
19 1000000000000000003 
20 10000000000000001021 
21 100000000000000000039 
22 1000000000000000000373 
23 10000000000000000000009 
24 100000000000000000000393 
25 1000000000000000000000121 
26 10000000000000000000000607 
27 100000000000000000000000067 
28 1000000000000000000000000427 
29 10000000000000000000000000457 
30 100000000000000000000000000481 
31 1000000000000000000000000000211 
32 10000000000000000000000000000033 
33 100000000000000000000000000000309 
34 1000000000000000000000000000000663 
35 10000000000000000000000000000001971 
36 100000000000000000000000000000001243 
37 1000000000000000000000000000000000067 
38 10000000000000000000000000000000003933 
39 100000000000000000000000000000000000247 
40 1000000000000000000000000000000000000003 
41 10000000000000000000000000000000000000121 
42 100000000000000000000000000000000000000447 
43 1000000000000000000000000000000000000000481 
44 10000000000000000000000000000000000000002481 
45 100000000000000000000000000000000000000000309 
46 1000000000000000000000000000000000000000000009 
47 10000000000000000000000000000000000000000000121 
48 100000000000000000000000000000000000000000000033 
49 1000000000000000000000000000000000000000000000841 
50 10000000000000000000000000000000000000000000000009