A292834 - cp's OEIS frontend

A292834 Numbers m, not powers of 2, such that the least prime factor of 2^m + 1 is congruent to 1 (mod m).

n	a(n)
1	24
2	48
3	112
4	160
5	192
6	272
7	448
8	496
9	656
10	688
11	832
12	896
13	1088
14	1152
15	1168
16	1328
17	1360
18	1408
19	1472
20	1520
21	1664
22	1744
23	1920
24	1984
25	2176
26	2304
27	2432
28	2560
29	2688
30	2752
31	2816
32	2944
33	2960
34	3056
35	3072
36	3200
37	3328
38	3520
39	3664
40	3712
41	3776
42	4672
43	4864
44	4928
45	5120
46	5376
47	5552
48	5888
49	6144

[24, 48, 112, 160, 192, 272, 448, 496, 656, 688, 832, 896, 1088, 1152, 1168, 1328, 1360, 1408, 1472, 1520, 1664, 1744, 1920, 1984, 2176, 2304, 2432, 2560, 2688, 2752, 2816, 2944, 2960, 3056, 3072, 3200, 3328, 3520, 3664, 3712, 3776, 4672, 4864, 4928, 5120, 5376, 5552, 5888, 6144]

cp's OEIS Frontend

A292834 Numbers m, not powers of 2, such that the least prime factor of 2^m + 1 is congruent to 1 (mod m).

Table of values

List of values