A074250 - cp's OEIS frontend

A074250 Smallest p>1 for which n^p ends in n, or -1 if no such p exists. The smallest p for which n is a p-morphic number.

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

[2, 5, 5, 3, 2, 2, 5, 5, 3, -1, 11, 21, 21, -1, -1, 6, 21, -1, 11, -1, 6, -1, 21, 3, 2, -1, 21, 21, 11, -1, 11, 5, 21, -1, -1, 6, 21, -1, 11, -1, 6, -1, 5, 11, -1, -1, 21, 21, 3, -1, 3, 21, 21, -1, -1, 6, 5, -1, 11, -1, 6, -1, 21, 11, -1, -1, 21, 5, 11, -1, 11, 21, 21, -1, 3, 2, 21, -1, 11, -1, 6, -1, 21, 11, -1, -1, 21, 21, 11, -1, 11, 21, 5, -1]

cp's OEIS Frontend

A074250 Smallest p>1 for which n^p ends in n, or -1 if no such p exists. The smallest p for which n is a p-morphic number.

Table of values

List of values

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

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

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