A254444 - cp's OEIS frontend

A254444 Largest k such that p = prime(n) satisfies b^(p-1) == 1 (mod p^k) for some base b with 1 < b < p.

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

[1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 3, 2, 2, 2, 1, 1, 2, 1, 2, 1, 1, 1, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1]

cp's OEIS Frontend

A254444 Largest k such that p = prime(n) satisfies b^(p-1) == 1 (mod p^k) for some base b with 1 < b < p.

Table of values

List of values

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

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

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