A076396 - cp's OEIS frontend

A076396 Smallest prime factor of n-th perfect power.

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

[1, 2, 2, 3, 2, 5, 3, 2, 2, 7, 2, 3, 2, 11, 5, 2, 2, 13, 2, 2, 3, 3, 2, 17, 2, 7, 19, 2, 3, 2, 2, 23, 2, 5, 2, 3, 2, 29, 2, 31, 2, 2, 3, 2, 5, 2, 11, 37, 2, 3, 2, 41, 2, 2, 43, 2, 3, 2, 2, 3, 13, 47, 2, 7, 2, 3, 2, 2, 53, 2, 5, 5, 2, 3, 2, 3, 59, 2, 61, 2, 3, 2, 5, 2, 67, 2, 3, 2, 17, 71, 2, 73, 2, 3]

cp's OEIS Frontend

A076396 Smallest prime factor of n-th perfect power.

Table of values

List of values

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

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

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