A241423 - cp's OEIS frontend

A241423 Largest number k > 0 such that n + k! is prime, or 0 if no such k exists.

n	a(n)
2	1
3	2
4	1
5	4
6	1
7	6
8	0
9	2
10	1
11	10
12	1
13	6
14	0
15	2
16	1
17	11
18	1
19	14
20	0
21	2
22	1
23	16
24	0
25	3
26	0
27	2
28	1
29	20
30	1
31	22
32	0
33	0
34	0
35	4
36	1
37	33
38	0
39	2
40	1
41	25
42	1
43	38
44	0
45	2
46	1
47	44
48	0
49	6
50	0
51	2
52	1
53	52
54	0
55	4
56	0
57	2
58	1
59	27
60	1
61	50
62	0
63	0
64	0
65	4
66	1
67	64
68	0
69	2
70	1
71	55
72	1
73	67
74	0
75	0
76	0
77	6
78	1
79	73
80	0
81	2
82	1
83	68
84	0
85	4
86	0
87	2
88	1
89	52
90	0
91	6

[1, 2, 1, 4, 1, 6, 0, 2, 1, 10, 1, 6, 0, 2, 1, 11, 1, 14, 0, 2, 1, 16, 0, 3, 0, 2, 1, 20, 1, 22, 0, 0, 0, 4, 1, 33, 0, 2, 1, 25, 1, 38, 0, 2, 1, 44, 0, 6, 0, 2, 1, 52, 0, 4, 0, 2, 1, 27, 1, 50, 0, 0, 0, 4, 1, 64, 0, 2, 1, 55, 1, 67, 0, 0, 0, 6, 1, 73, 0, 2, 1, 68, 0, 4, 0, 2, 1, 52, 0, 6]

cp's OEIS Frontend

A241423 Largest number k > 0 such that n + k! is prime, or 0 if no such k exists.

Table of values

List of values

n	a(n)
2	1
3	2
4	1
5	4
6	1
7	6
8	0
9	2
10	1
11	10
12	1
13	6
14	0
15	2
16	1
17	11
18	1
19	14
20	0
21	2
22	1
23	16
24	0
25	3
26	0
27	2
28	1
29	20
30	1
31	22
32	0
33	0
34	0
35	4
36	1
37	33
38	0
39	2
40	1
41	25
42	1
43	38
44	0
45	2
46	1
47	44
48	0
49	6
50	0
51	2
52	1
53	52
54	0
55	4
56	0
57	2
58	1
59	27
60	1
61	50
62	0
63	0
64	0
65	4
66	1
67	64
68	0
69	2
70	1
71	55
72	1
73	67
74	0
75	0
76	0
77	6
78	1
79	73
80	0
81	2
82	1
83	68
84	0
85	4
86	0
87	2
88	1
89	52
90	0
91	6

n	a(n)
2	1
3	2
4	1
5	4
6	1
7	6
8	0
9	2
10	1
11	10
12	1
13	6
14	0
15	2
16	1
17	11
18	1
19	14
20	0
21	2
22	1
23	16
24	0
25	3
26	0
27	2
28	1
29	20
30	1
31	22
32	0
33	0
34	0
35	4
36	1
37	33
38	0
39	2
40	1
41	25
42	1
43	38
44	0
45	2
46	1
47	44
48	0
49	6
50	0
51	2
52	1
53	52
54	0
55	4
56	0
57	2
58	1
59	27
60	1
61	50
62	0
63	0
64	0
65	4
66	1
67	64
68	0
69	2
70	1
71	55
72	1
73	67
74	0
75	0
76	0
77	6
78	1
79	73
80	0
81	2
82	1
83	68
84	0
85	4
86	0
87	2
88	1
89	52
90	0
91	6

n	a(n)
2	1
3	2
4	1
5	4
6	1
7	6
8	0
9	2
10	1
11	10
12	1
13	6
14	0
15	2
16	1
17	11
18	1
19	14
20	0
21	2
22	1
23	16
24	0
25	3
26	0
27	2
28	1
29	20
30	1
31	22
32	0
33	0
34	0
35	4
36	1
37	33
38	0
39	2
40	1
41	25
42	1
43	38
44	0
45	2
46	1
47	44
48	0
49	6
50	0
51	2
52	1
53	52
54	0
55	4
56	0
57	2
58	1
59	27
60	1
61	50
62	0
63	0
64	0
65	4
66	1
67	64
68	0
69	2
70	1
71	55
72	1
73	67
74	0
75	0
76	0
77	6
78	1
79	73
80	0
81	2
82	1
83	68
84	0
85	4
86	0
87	2
88	1
89	52
90	0
91	6