A277129 - cp's OEIS frontend

A277129 Largest m < n such that 2^m == 2^n (mod n).

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

[0, 1, 1, 3, 1, 4, 4, 7, 3, 6, 1, 10, 1, 11, 11, 15, 9, 12, 1, 16, 15, 12, 12, 22, 5, 14, 9, 25, 1, 26, 26, 31, 23, 26, 23, 30, 1, 20, 27, 36, 21, 36, 29, 34, 33, 35, 24, 46, 28, 30, 43, 40, 1, 36, 35, 53, 39, 30, 1, 56, 1, 57, 57, 63, 53, 56, 1, 60, 47, 58, 36, 66, 64, 38, 55, 58, 47, 66, 40, 76, 27, 62, 1]

cp's OEIS Frontend

A277129 Largest m < n such that 2^m == 2^n (mod n).

Table of values

List of values

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

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

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