A242242 - cp's OEIS frontend

A242242 Least positive primitive root g < prime(n) modulo prime(n) with 2^g - 1 also a primitive root modulo prime(n), or 0 if such a number g does not exist.

n	a(n)
1	1
2	0
3	2
4	5
5	2
6	2
7	3
8	2
9	5
10	2
11	3
12	2
13	6
14	3
15	5
16	2
17	2
18	2
19	2
20	7
21	5
22	3
23	2
24	3
25	5
26	2
27	5
28	2
29	6
30	3
31	3
32	2
33	3
34	2
35	2
36	6
37	5
38	2
39	5
40	2
41	2
42	2
43	19
44	5
45	2
46	3
47	2
48	3
49	2
50	6
51	3
52	7
53	7
54	6
55	3
56	5
57	2
58	6
59	5
60	3
61	3
62	2
63	5
64	17
65	10
66	2
67	3
68	10
69	2
70	2

[1, 0, 2, 5, 2, 2, 3, 2, 5, 2, 3, 2, 6, 3, 5, 2, 2, 2, 2, 7, 5, 3, 2, 3, 5, 2, 5, 2, 6, 3, 3, 2, 3, 2, 2, 6, 5, 2, 5, 2, 2, 2, 19, 5, 2, 3, 2, 3, 2, 6, 3, 7, 7, 6, 3, 5, 2, 6, 5, 3, 3, 2, 5, 17, 10, 2, 3, 10, 2, 2]

cp's OEIS Frontend

A242242 Least positive primitive root g < prime(n) modulo prime(n) with 2^g - 1 also a primitive root modulo prime(n), or 0 if such a number g does not exist.

Table of values

List of values

n	a(n)
1	1
2	0
3	2
4	5
5	2
6	2
7	3
8	2
9	5
10	2
11	3
12	2
13	6
14	3
15	5
16	2
17	2
18	2
19	2
20	7
21	5
22	3
23	2
24	3
25	5
26	2
27	5
28	2
29	6
30	3
31	3
32	2
33	3
34	2
35	2
36	6
37	5
38	2
39	5
40	2
41	2
42	2
43	19
44	5
45	2
46	3
47	2
48	3
49	2
50	6
51	3
52	7
53	7
54	6
55	3
56	5
57	2
58	6
59	5
60	3
61	3
62	2
63	5
64	17
65	10
66	2
67	3
68	10
69	2
70	2

n	a(n)
1	1
2	0
3	2
4	5
5	2
6	2
7	3
8	2
9	5
10	2
11	3
12	2
13	6
14	3
15	5
16	2
17	2
18	2
19	2
20	7
21	5
22	3
23	2
24	3
25	5
26	2
27	5
28	2
29	6
30	3
31	3
32	2
33	3
34	2
35	2
36	6
37	5
38	2
39	5
40	2
41	2
42	2
43	19
44	5
45	2
46	3
47	2
48	3
49	2
50	6
51	3
52	7
53	7
54	6
55	3
56	5
57	2
58	6
59	5
60	3
61	3
62	2
63	5
64	17
65	10
66	2
67	3
68	10
69	2
70	2

n	a(n)
1	1
2	0
3	2
4	5
5	2
6	2
7	3
8	2
9	5
10	2
11	3
12	2
13	6
14	3
15	5
16	2
17	2
18	2
19	2
20	7
21	5
22	3
23	2
24	3
25	5
26	2
27	5
28	2
29	6
30	3
31	3
32	2
33	3
34	2
35	2
36	6
37	5
38	2
39	5
40	2
41	2
42	2
43	19
44	5
45	2
46	3
47	2
48	3
49	2
50	6
51	3
52	7
53	7
54	6
55	3
56	5
57	2
58	6
59	5
60	3
61	3
62	2
63	5
64	17
65	10
66	2
67	3
68	10
69	2
70	2