A049479 - cp's OEIS frontend

A049479 Smallest prime dividing 2^n - 1.

n	a(n)
2	3
3	7
4	3
5	31
6	3
7	127
8	3
9	7
10	3
11	23
12	3
13	8191
14	3
15	7
16	3
17	131071
18	3
19	524287
20	3
21	7
22	3
23	47
24	3
25	31
26	3
27	7
28	3
29	233
30	3
31	2147483647
32	3
33	7
34	3
35	31
36	3
37	223
38	3
39	7
40	3
41	13367
42	3
43	431
44	3
45	7
46	3
47	2351
48	3
49	127
50	3
51	7
52	3
53	6361
54	3
55	23
56	3
57	7
58	3
59	179951
60	3
61	2305843009213693951
62	3
63	7
64	3
65	31

[3, 7, 3, 31, 3, 127, 3, 7, 3, 23, 3, 8191, 3, 7, 3, 131071, 3, 524287, 3, 7, 3, 47, 3, 31, 3, 7, 3, 233, 3, 2147483647, 3, 7, 3, 31, 3, 223, 3, 7, 3, 13367, 3, 431, 3, 7, 3, 2351, 3, 127, 3, 7, 3, 6361, 3, 23, 3, 7, 3, 179951, 3, 2305843009213693951, 3, 7, 3, 31]

cp's OEIS Frontend

A049479 Smallest prime dividing 2^n - 1.

Table of values

List of values