A064632 - cp's OEIS frontend

A064632 Smallest prime p such that n = (p-1)/(q-1) for some prime q.

n	a(n)
2	3
3	7
4	5
5	11
6	7
7	29
8	17
9	19
10	11
11	23
12	13
13	53
14	29
15	31
16	17
17	103
18	19
19	191
20	41
21	43
22	23
23	47
24	97
25	101
26	53
27	109
28	29
29	59
30	31
31	311
32	193
33	67
34	137
35	71
36	37
37	149
38	229
39	79
40	41
41	83
42	43
43	173
44	89
45	181
46	47
47	283
48	97
49	197
50	101
51	103
52	53
53	107
54	109
55	331
56	113
57	229
58	59
59	709
60	61
61	367
62	373

[3, 7, 5, 11, 7, 29, 17, 19, 11, 23, 13, 53, 29, 31, 17, 103, 19, 191, 41, 43, 23, 47, 97, 101, 53, 109, 29, 59, 31, 311, 193, 67, 137, 71, 37, 149, 229, 79, 41, 83, 43, 173, 89, 181, 47, 283, 97, 197, 101, 103, 53, 107, 109, 331, 113, 229, 59, 709, 61, 367, 373]

cp's OEIS Frontend

A064632 Smallest prime p such that n = (p-1)/(q-1) for some prime q.

Table of values

List of values

n	a(n)
2	3
3	7
4	5
5	11
6	7
7	29
8	17
9	19
10	11
11	23
12	13
13	53
14	29
15	31
16	17
17	103
18	19
19	191
20	41
21	43
22	23
23	47
24	97
25	101
26	53
27	109
28	29
29	59
30	31
31	311
32	193
33	67
34	137
35	71
36	37
37	149
38	229
39	79
40	41
41	83
42	43
43	173
44	89
45	181
46	47
47	283
48	97
49	197
50	101
51	103
52	53
53	107
54	109
55	331
56	113
57	229
58	59
59	709
60	61
61	367
62	373

n	a(n)
2	3
3	7
4	5
5	11
6	7
7	29
8	17
9	19
10	11
11	23
12	13
13	53
14	29
15	31
16	17
17	103
18	19
19	191
20	41
21	43
22	23
23	47
24	97
25	101
26	53
27	109
28	29
29	59
30	31
31	311
32	193
33	67
34	137
35	71
36	37
37	149
38	229
39	79
40	41
41	83
42	43
43	173
44	89
45	181
46	47
47	283
48	97
49	197
50	101
51	103
52	53
53	107
54	109
55	331
56	113
57	229
58	59
59	709
60	61
61	367
62	373

n	a(n)
2	3
3	7
4	5
5	11
6	7
7	29
8	17
9	19
10	11
11	23
12	13
13	53
14	29
15	31
16	17
17	103
18	19
19	191
20	41
21	43
22	23
23	47
24	97
25	101
26	53
27	109
28	29
29	59
30	31
31	311
32	193
33	67
34	137
35	71
36	37
37	149
38	229
39	79
40	41
41	83
42	43
43	173
44	89
45	181
46	47
47	283
48	97
49	197
50	101
51	103
52	53
53	107
54	109
55	331
56	113
57	229
58	59
59	709
60	61
61	367
62	373