A262083 - cp's OEIS frontend

A262083 Smallest possible prime factor of 10^k+n for any k.

n	a(n)
0	2
1	7
2	2
3	7
4	2
5	3
6	2
7	17
8	2
9	7
10	2
11	3
12	2
13	7
14	2
15	5
16	2
17	3
18	2
19	7
20	2
21	11
22	2
23	3
24	2
25	5
26	2
27	7
28	2
29	3
30	2
31	7
32	2
33	7
34	2
35	3
36	2
37	7
38	2
39	7
40	2
41	3
42	2
43	7
44	2
45	5
46	2
47	3
48	2
49	13
50	2
51	7
52	2
53	3
54	2
55	5
56	2
57	7
58	2
59	3
60	2
61	7
62	2
63	17
64	2
65	3
66	2
67	7
68	2
69	7
70	2
71	3
72	2
73	7
74	2
75	5
76	2
77	3
78	2
79	7
80	2
81	7
82	2
83	3
84	2
85	5
86	2
87	7
88	2
89	3
90	2
91	17
92	2
93	7
94	2
95	3
96	2
97	7
98	2
99	7
100	2

[2, 7, 2, 7, 2, 3, 2, 17, 2, 7, 2, 3, 2, 7, 2, 5, 2, 3, 2, 7, 2, 11, 2, 3, 2, 5, 2, 7, 2, 3, 2, 7, 2, 7, 2, 3, 2, 7, 2, 7, 2, 3, 2, 7, 2, 5, 2, 3, 2, 13, 2, 7, 2, 3, 2, 5, 2, 7, 2, 3, 2, 7, 2, 17, 2, 3, 2, 7, 2, 7, 2, 3, 2, 7, 2, 5, 2, 3, 2, 7, 2, 7, 2, 3, 2, 5, 2, 7, 2, 3, 2, 17, 2, 7, 2, 3, 2, 7, 2, 7, 2]

cp's OEIS Frontend

A262083 Smallest possible prime factor of 10^k+n for any k.

Table of values

List of values

n	a(n)
0	2
1	7
2	2
3	7
4	2
5	3
6	2
7	17
8	2
9	7
10	2
11	3
12	2
13	7
14	2
15	5
16	2
17	3
18	2
19	7
20	2
21	11
22	2
23	3
24	2
25	5
26	2
27	7
28	2
29	3
30	2
31	7
32	2
33	7
34	2
35	3
36	2
37	7
38	2
39	7
40	2
41	3
42	2
43	7
44	2
45	5
46	2
47	3
48	2
49	13
50	2
51	7
52	2
53	3
54	2
55	5
56	2
57	7
58	2
59	3
60	2
61	7
62	2
63	17
64	2
65	3
66	2
67	7
68	2
69	7
70	2
71	3
72	2
73	7
74	2
75	5
76	2
77	3
78	2
79	7
80	2
81	7
82	2
83	3
84	2
85	5
86	2
87	7
88	2
89	3
90	2
91	17
92	2
93	7
94	2
95	3
96	2
97	7
98	2
99	7
100	2

n	a(n)
0	2
1	7
2	2
3	7
4	2
5	3
6	2
7	17
8	2
9	7
10	2
11	3
12	2
13	7
14	2
15	5
16	2
17	3
18	2
19	7
20	2
21	11
22	2
23	3
24	2
25	5
26	2
27	7
28	2
29	3
30	2
31	7
32	2
33	7
34	2
35	3
36	2
37	7
38	2
39	7
40	2
41	3
42	2
43	7
44	2
45	5
46	2
47	3
48	2
49	13
50	2
51	7
52	2
53	3
54	2
55	5
56	2
57	7
58	2
59	3
60	2
61	7
62	2
63	17
64	2
65	3
66	2
67	7
68	2
69	7
70	2
71	3
72	2
73	7
74	2
75	5
76	2
77	3
78	2
79	7
80	2
81	7
82	2
83	3
84	2
85	5
86	2
87	7
88	2
89	3
90	2
91	17
92	2
93	7
94	2
95	3
96	2
97	7
98	2
99	7
100	2

n	a(n)
0	2
1	7
2	2
3	7
4	2
5	3
6	2
7	17
8	2
9	7
10	2
11	3
12	2
13	7
14	2
15	5
16	2
17	3
18	2
19	7
20	2
21	11
22	2
23	3
24	2
25	5
26	2
27	7
28	2
29	3
30	2
31	7
32	2
33	7
34	2
35	3
36	2
37	7
38	2
39	7
40	2
41	3
42	2
43	7
44	2
45	5
46	2
47	3
48	2
49	13
50	2
51	7
52	2
53	3
54	2
55	5
56	2
57	7
58	2
59	3
60	2
61	7
62	2
63	17
64	2
65	3
66	2
67	7
68	2
69	7
70	2
71	3
72	2
73	7
74	2
75	5
76	2
77	3
78	2
79	7
80	2
81	7
82	2
83	3
84	2
85	5
86	2
87	7
88	2
89	3
90	2
91	17
92	2
93	7
94	2
95	3
96	2
97	7
98	2
99	7
100	2