A088782 - cp's OEIS frontend

A088782 a(n) is the smallest k>0 such that concatenation of n^k and 1 is prime, or 0 if no such number exists.

n	a(n)
1	1
2	2
3	1
4	1
5	2
6	1
7	1
8	2
9	2
10	1
11	10
12	0
13	1
14	6
15	1
16	3
17	1356
18	1
19	1
20	2
21	1
22	15
23	0
24	1
25	1
26	2
27	1
28	1
29	4
30	2
31	1
32	0
33	1
34	0
35	2
36	3
37	2
38	4
39	4
40	1
41	2
42	1
43	1
44	6
45	0
46	1
47	2
48	2
49	1
50	4
51	3
52	1
53	16
54	1
55	9
56	0
57	1
58	2
59	36
60	1
61	165
62	66
63	1
64	1
65	0
66	1
67	0
68	6
69	1
70	1
71	2
72	12
73	3
74	138
75	1
76	1
77	4
78	0
79	5
80	4
81	1
82	1
83	2
84	5
85	2
86	2
87	3
88	1
89	0
90	2
91	1
92	24
93	2
94	1
95	42
96	7
97	1
98	0
99	1

[1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 10, 0, 1, 6, 1, 3, 1356, 1, 1, 2, 1, 15, 0, 1, 1, 2, 1, 1, 4, 2, 1, 0, 1, 0, 2, 3, 2, 4, 4, 1, 2, 1, 1, 6, 0, 1, 2, 2, 1, 4, 3, 1, 16, 1, 9, 0, 1, 2, 36, 1, 165, 66, 1, 1, 0, 1, 0, 6, 1, 1, 2, 12, 3, 138, 1, 1, 4, 0, 5, 4, 1, 1, 2, 5, 2, 2, 3, 1, 0, 2, 1, 24, 2, 1, 42, 7, 1, 0, 1]

cp's OEIS Frontend

A088782 a(n) is the smallest k>0 such that concatenation of n^k and 1 is prime, or 0 if no such number exists.

Table of values

List of values