A244424 - cp's OEIS frontend

A244424 Least number k > 0 such that concatenating k consecutive natural numbers beginning with n is prime, or 0 if no such number exists.

n	a(n)
1	0
2	1
3	1
4	4
5	1
6	2
7	1
8	2
9	179
10	0
11	1
12	2
13	1
14	4
15	5
16	28
17	1
18	3590
19	1
20	4
21	0
22	0
23	1
24	0
25	25
26	122
27	0
28	46
29	1
30	0
31	1
32	0
33	71
34	4
35	569
36	2
37	1
38	20
39	5
40	0
41	1
42	2
43	1
44	8
45	0
46	0
47	1
48	0
49	193
50	2
51	0
52	0
53	1
54	0
55	0
56	2
57	5
58	4
59	1
60	0
61	1
62	2
63	0
64	4
65	5
66	938
67	1
68	2
69	119
70	58
71	1
72	116
73	1
74	0
75	125
76	346
77	5
78	2
79	1
80	2
81	0
82	0
83	1
84	0
85	0
86	32

[0, 1, 1, 4, 1, 2, 1, 2, 179, 0, 1, 2, 1, 4, 5, 28, 1, 3590, 1, 4, 0, 0, 1, 0, 25, 122, 0, 46, 1, 0, 1, 0, 71, 4, 569, 2, 1, 20, 5, 0, 1, 2, 1, 8, 0, 0, 1, 0, 193, 2, 0, 0, 1, 0, 0, 2, 5, 4, 1, 0, 1, 2, 0, 4, 5, 938, 1, 2, 119, 58, 1, 116, 1, 0, 125, 346, 5, 2, 1, 2, 0, 0, 1, 0, 0, 32]

cp's OEIS Frontend

A244424 Least number k > 0 such that concatenating k consecutive natural numbers beginning with n is prime, or 0 if no such number exists.

Table of values

List of values