A068211 - cp's OEIS frontend

A068211 Largest prime factor of Euler totient function phi(n).

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

[2, 2, 2, 2, 3, 2, 3, 2, 5, 2, 3, 3, 2, 2, 2, 3, 3, 2, 3, 5, 11, 2, 5, 3, 3, 3, 7, 2, 5, 2, 5, 2, 3, 3, 3, 3, 3, 2, 5, 3, 7, 5, 3, 11, 23, 2, 7, 5, 2, 3, 13, 3, 5, 3, 3, 7, 29, 2, 5, 5, 3, 2, 3, 5, 11, 2, 11, 3, 7, 3, 3, 3, 5, 3, 5, 3, 13, 2, 3, 5, 41, 3, 2, 7, 7, 5, 11, 3, 3, 11, 5, 23, 3, 2, 3, 7, 5, 5]

cp's OEIS Frontend

A068211 Largest prime factor of Euler totient function phi(n).

Table of values

List of values

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

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

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