A076397 - cp's OEIS frontend

A076397 Largest 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	3
10	7
11	2
12	3
13	5
14	11
15	5
16	2
17	3
18	13
19	7
20	3
21	5
22	3
23	2
24	17
25	3
26	7
27	19
28	5
29	7
30	11
31	2
32	23
33	3
34	5
35	13
36	3
37	7
38	29
39	5
40	31
41	5
42	2
43	11
44	17
45	7
46	3
47	11
48	37
49	19
50	13
51	5
52	41
53	3
54	7
55	43
56	11
57	5
58	2
59	23
60	3
61	13
62	47
63	3
64	7
65	5
66	17
67	13
68	7
69	53
70	3
71	11
72	5
73	7
74	19
75	29
76	5
77	59
78	5
79	61
80	31
81	7
82	2
83	13
84	11
85	67
86	17
87	23

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

cp's OEIS Frontend

A076397 Largest 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	3
10	7
11	2
12	3
13	5
14	11
15	5
16	2
17	3
18	13
19	7
20	3
21	5
22	3
23	2
24	17
25	3
26	7
27	19
28	5
29	7
30	11
31	2
32	23
33	3
34	5
35	13
36	3
37	7
38	29
39	5
40	31
41	5
42	2
43	11
44	17
45	7
46	3
47	11
48	37
49	19
50	13
51	5
52	41
53	3
54	7
55	43
56	11
57	5
58	2
59	23
60	3
61	13
62	47
63	3
64	7
65	5
66	17
67	13
68	7
69	53
70	3
71	11
72	5
73	7
74	19
75	29
76	5
77	59
78	5
79	61
80	31
81	7
82	2
83	13
84	11
85	67
86	17
87	23

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

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