A219109 - cp's OEIS frontend

A219109 The smallest k such that prime(k) == -1 (mod n).

n	a(n)
1	1
2	2
3	1
4	2
5	8
6	3
7	6
8	4
9	7
10	8
11	14
12	5
13	27
14	6
15	10
16	11
17	19
18	7
19	12
20	8
21	13
22	14
23	33
24	9
25	35
26	27
27	16
28	23
29	40
30	10
31	18
32	11
33	32
34	19
35	34
36	20
37	21
38	12
39	51
40	22
41	38
42	13
43	55
44	14
45	24
46	33
47	60
48	15
49	25
50	35
51	26
52	27
53	47
54	16
55	29
56	39
57	30
58	40
59	71
60	17
61	93
62	18
63	54
64	31
65	77
66	32
67	79
68	19
69	33
70	34
71	61
72	20
73	172
74	21
75	35
76	36

[1, 2, 1, 2, 8, 3, 6, 4, 7, 8, 14, 5, 27, 6, 10, 11, 19, 7, 12, 8, 13, 14, 33, 9, 35, 27, 16, 23, 40, 10, 18, 11, 32, 19, 34, 20, 21, 12, 51, 22, 38, 13, 55, 14, 24, 33, 60, 15, 25, 35, 26, 27, 47, 16, 29, 39, 30, 40, 71, 17, 93, 18, 54, 31, 77, 32, 79, 19, 33, 34, 61, 20, 172, 21, 35, 36]

cp's OEIS Frontend

A219109 The smallest k such that prime(k) == -1 (mod n).

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	2
5	8
6	3
7	6
8	4
9	7
10	8
11	14
12	5
13	27
14	6
15	10
16	11
17	19
18	7
19	12
20	8
21	13
22	14
23	33
24	9
25	35
26	27
27	16
28	23
29	40
30	10
31	18
32	11
33	32
34	19
35	34
36	20
37	21
38	12
39	51
40	22
41	38
42	13
43	55
44	14
45	24
46	33
47	60
48	15
49	25
50	35
51	26
52	27
53	47
54	16
55	29
56	39
57	30
58	40
59	71
60	17
61	93
62	18
63	54
64	31
65	77
66	32
67	79
68	19
69	33
70	34
71	61
72	20
73	172
74	21
75	35
76	36

n	a(n)
1	1
2	2
3	1
4	2
5	8
6	3
7	6
8	4
9	7
10	8
11	14
12	5
13	27
14	6
15	10
16	11
17	19
18	7
19	12
20	8
21	13
22	14
23	33
24	9
25	35
26	27
27	16
28	23
29	40
30	10
31	18
32	11
33	32
34	19
35	34
36	20
37	21
38	12
39	51
40	22
41	38
42	13
43	55
44	14
45	24
46	33
47	60
48	15
49	25
50	35
51	26
52	27
53	47
54	16
55	29
56	39
57	30
58	40
59	71
60	17
61	93
62	18
63	54
64	31
65	77
66	32
67	79
68	19
69	33
70	34
71	61
72	20
73	172
74	21
75	35
76	36

n	a(n)
1	1
2	2
3	1
4	2
5	8
6	3
7	6
8	4
9	7
10	8
11	14
12	5
13	27
14	6
15	10
16	11
17	19
18	7
19	12
20	8
21	13
22	14
23	33
24	9
25	35
26	27
27	16
28	23
29	40
30	10
31	18
32	11
33	32
34	19
35	34
36	20
37	21
38	12
39	51
40	22
41	38
42	13
43	55
44	14
45	24
46	33
47	60
48	15
49	25
50	35
51	26
52	27
53	47
54	16
55	29
56	39
57	30
58	40
59	71
60	17
61	93
62	18
63	54
64	31
65	77
66	32
67	79
68	19
69	33
70	34
71	61
72	20
73	172
74	21
75	35
76	36