A143663 - cp's OEIS frontend

A143663 a(n) is the least prime such that the multiplicative order of 3 mod a(n) equals n, or a(n)=1 if no such prime exists.

n	a(n)
1	2
2	1
3	13
4	5
5	11
6	7
7	1093
8	41
9	757
10	61
11	23
12	73
13	797161
14	547
15	4561
16	17
17	1871
18	19
19	1597
20	1181
21	368089
22	67
23	47
24	6481
25	8951
26	398581
27	109
28	29
29	59
30	31
31	683
32	21523361
33	2413941289
34	103
35	71
36	530713
37	13097927
38	2851
39	313
40	42521761
41	83
42	43
43	431
44	5501
45	181
46	23535794707

[2, 1, 13, 5, 11, 7, 1093, 41, 757, 61, 23, 73, 797161, 547, 4561, 17, 1871, 19, 1597, 1181, 368089, 67, 47, 6481, 8951, 398581, 109, 29, 59, 31, 683, 21523361, 2413941289, 103, 71, 530713, 13097927, 2851, 313, 42521761, 83, 43, 431, 5501, 181, 23535794707]

cp's OEIS Frontend

A143663 a(n) is the least prime such that the multiplicative order of 3 mod a(n) equals n, or a(n)=1 if no such prime exists.

Table of values

List of values