A004648 - cp's OEIS frontend

A004648 a(n) = prime(n) mod n.

n	a(n)
1	0
2	1
3	2
4	3
5	1
6	1
7	3
8	3
9	5
10	9
11	9
12	1
13	2
14	1
15	2
16	5
17	8
18	7
19	10
20	11
21	10
22	13
23	14
24	17
25	22
26	23
27	22
28	23
29	22
30	23
31	3
32	3
33	5
34	3
35	9
36	7
37	9
38	11
39	11
40	13
41	15
42	13
43	19
44	17
45	17
46	15
47	23
48	31
49	31
50	29
51	29
52	31
53	29
54	35
55	37
56	39
57	41
58	39
59	41
60	41
61	39
62	45
63	55
64	55
65	53
66	53
67	63
68	65
69	2
70	69
71	69
72	71
73	2
74	3
75	4
76	3

[0, 1, 2, 3, 1, 1, 3, 3, 5, 9, 9, 1, 2, 1, 2, 5, 8, 7, 10, 11, 10, 13, 14, 17, 22, 23, 22, 23, 22, 23, 3, 3, 5, 3, 9, 7, 9, 11, 11, 13, 15, 13, 19, 17, 17, 15, 23, 31, 31, 29, 29, 31, 29, 35, 37, 39, 41, 39, 41, 41, 39, 45, 55, 55, 53, 53, 63, 65, 2, 69, 69, 71, 2, 3, 4, 3]

cp's OEIS Frontend

A004648 a(n) = prime(n) mod n.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	1
6	1
7	3
8	3
9	5
10	9
11	9
12	1
13	2
14	1
15	2
16	5
17	8
18	7
19	10
20	11
21	10
22	13
23	14
24	17
25	22
26	23
27	22
28	23
29	22
30	23
31	3
32	3
33	5
34	3
35	9
36	7
37	9
38	11
39	11
40	13
41	15
42	13
43	19
44	17
45	17
46	15
47	23
48	31
49	31
50	29
51	29
52	31
53	29
54	35
55	37
56	39
57	41
58	39
59	41
60	41
61	39
62	45
63	55
64	55
65	53
66	53
67	63
68	65
69	2
70	69
71	69
72	71
73	2
74	3
75	4
76	3

n	a(n)
1	0
2	1
3	2
4	3
5	1
6	1
7	3
8	3
9	5
10	9
11	9
12	1
13	2
14	1
15	2
16	5
17	8
18	7
19	10
20	11
21	10
22	13
23	14
24	17
25	22
26	23
27	22
28	23
29	22
30	23
31	3
32	3
33	5
34	3
35	9
36	7
37	9
38	11
39	11
40	13
41	15
42	13
43	19
44	17
45	17
46	15
47	23
48	31
49	31
50	29
51	29
52	31
53	29
54	35
55	37
56	39
57	41
58	39
59	41
60	41
61	39
62	45
63	55
64	55
65	53
66	53
67	63
68	65
69	2
70	69
71	69
72	71
73	2
74	3
75	4
76	3

n	a(n)
1	0
2	1
3	2
4	3
5	1
6	1
7	3
8	3
9	5
10	9
11	9
12	1
13	2
14	1
15	2
16	5
17	8
18	7
19	10
20	11
21	10
22	13
23	14
24	17
25	22
26	23
27	22
28	23
29	22
30	23
31	3
32	3
33	5
34	3
35	9
36	7
37	9
38	11
39	11
40	13
41	15
42	13
43	19
44	17
45	17
46	15
47	23
48	31
49	31
50	29
51	29
52	31
53	29
54	35
55	37
56	39
57	41
58	39
59	41
60	41
61	39
62	45
63	55
64	55
65	53
66	53
67	63
68	65
69	2
70	69
71	69
72	71
73	2
74	3
75	4
76	3