A079778 - cp's OEIS frontend

A079778 a(n) = smallest prime number such that a(n) - n is composite.

n	a(n)
1	5
2	11
3	7
4	13
5	11
6	31
7	11
8	17
9	13
10	19
11	17
12	37
13	17
14	23
15	19
16	31
17	23
18	43
19	23
20	29
21	29
22	31
23	29
24	59
25	29
26	41
27	31
28	37
29	37
30	79
31	37
32	41
33	37
34	43
35	41
36	61
37	41
38	47
39	43
40	61
41	47
42	67
43	47
44	53
45	53
46	61
47	53
48	73
49	53
50	59

[5, 11, 7, 13, 11, 31, 11, 17, 13, 19, 17, 37, 17, 23, 19, 31, 23, 43, 23, 29, 29, 31, 29, 59, 29, 41, 31, 37, 37, 79, 37, 41, 37, 43, 41, 61, 41, 47, 43, 61, 47, 67, 47, 53, 53, 61, 53, 73, 53, 59]

cp's OEIS Frontend

A079778 a(n) = smallest prime number such that a(n) - n is composite.

Table of values

List of values

n	a(n)
1	5
2	11
3	7
4	13
5	11
6	31
7	11
8	17
9	13
10	19
11	17
12	37
13	17
14	23
15	19
16	31
17	23
18	43
19	23
20	29
21	29
22	31
23	29
24	59
25	29
26	41
27	31
28	37
29	37
30	79
31	37
32	41
33	37
34	43
35	41
36	61
37	41
38	47
39	43
40	61
41	47
42	67
43	47
44	53
45	53
46	61
47	53
48	73
49	53
50	59

n	a(n)
1	5
2	11
3	7
4	13
5	11
6	31
7	11
8	17
9	13
10	19
11	17
12	37
13	17
14	23
15	19
16	31
17	23
18	43
19	23
20	29
21	29
22	31
23	29
24	59
25	29
26	41
27	31
28	37
29	37
30	79
31	37
32	41
33	37
34	43
35	41
36	61
37	41
38	47
39	43
40	61
41	47
42	67
43	47
44	53
45	53
46	61
47	53
48	73
49	53
50	59

n	a(n)
1	5
2	11
3	7
4	13
5	11
6	31
7	11
8	17
9	13
10	19
11	17
12	37
13	17
14	23
15	19
16	31
17	23
18	43
19	23
20	29
21	29
22	31
23	29
24	59
25	29
26	41
27	31
28	37
29	37
30	79
31	37
32	41
33	37
34	43
35	41
36	61
37	41
38	47
39	43
40	61
41	47
42	67
43	47
44	53
45	53
46	61
47	53
48	73
49	53
50	59