A065854 - cp's OEIS frontend

A065854 Smallest prime q such that (p^q-1)/(p-1) is a prime, where p = prime(n).

n	a(n)
1	2
2	3
3	3
4	5
5	17
6	5
7	3
8	19
9	5
10	5
11	7
12	13
13	3
14	5
15	127
16	11
17	3
18	7
19	19
20	3
21	5
22	5
23	5
24	3
25	17
26	3
27	19
28	17
29	17
30	23
31	5
32	3
33	11
34	163
35	7
36	13
37	17
38	7
39	3
40	3
41	19
42	17
43	17
44	5
45	31
46	577
47	41
48	239
49	5
50	11
51	113
52	5
53	17
54	7
55	23
56	5

[2, 3, 3, 5, 17, 5, 3, 19, 5, 5, 7, 13, 3, 5, 127, 11, 3, 7, 19, 3, 5, 5, 5, 3, 17, 3, 19, 17, 17, 23, 5, 3, 11, 163, 7, 13, 17, 7, 3, 3, 19, 17, 17, 5, 31, 577, 41, 239, 5, 11, 113, 5, 17, 7, 23, 5]

cp's OEIS Frontend

A065854 Smallest prime q such that (p^q-1)/(p-1) is a prime, where p = prime(n).

Table of values

List of values

n	a(n)
1	2
2	3
3	3
4	5
5	17
6	5
7	3
8	19
9	5
10	5
11	7
12	13
13	3
14	5
15	127
16	11
17	3
18	7
19	19
20	3
21	5
22	5
23	5
24	3
25	17
26	3
27	19
28	17
29	17
30	23
31	5
32	3
33	11
34	163
35	7
36	13
37	17
38	7
39	3
40	3
41	19
42	17
43	17
44	5
45	31
46	577
47	41
48	239
49	5
50	11
51	113
52	5
53	17
54	7
55	23
56	5

n	a(n)
1	2
2	3
3	3
4	5
5	17
6	5
7	3
8	19
9	5
10	5
11	7
12	13
13	3
14	5
15	127
16	11
17	3
18	7
19	19
20	3
21	5
22	5
23	5
24	3
25	17
26	3
27	19
28	17
29	17
30	23
31	5
32	3
33	11
34	163
35	7
36	13
37	17
38	7
39	3
40	3
41	19
42	17
43	17
44	5
45	31
46	577
47	41
48	239
49	5
50	11
51	113
52	5
53	17
54	7
55	23
56	5

n	a(n)
1	2
2	3
3	3
4	5
5	17
6	5
7	3
8	19
9	5
10	5
11	7
12	13
13	3
14	5
15	127
16	11
17	3
18	7
19	19
20	3
21	5
22	5
23	5
24	3
25	17
26	3
27	19
28	17
29	17
30	23
31	5
32	3
33	11
34	163
35	7
36	13
37	17
38	7
39	3
40	3
41	19
42	17
43	17
44	5
45	31
46	577
47	41
48	239
49	5
50	11
51	113
52	5
53	17
54	7
55	23
56	5