A078683 - cp's OEIS frontend

A078683 Least prime of the form n*2^m+1 for m>0, or 0 if there is no such prime.

n	a(n)
1	3
2	5
3	7
4	17
5	11
6	13
7	29
8	17
9	19
10	41
11	23
12	97
13	53
14	29
15	31
16	257
17	137
18	37
19	1217
20	41
21	43
22	89
23	47
24	97
25	101
26	53
27	109
28	113
29	59
30	61
31	7937
32	257
33	67
34	137
35	71
36	73
37	149
38	1217
39	79
40	641
41	83
42	337
43	173
44	89
45	181
46	11777

[3, 5, 7, 17, 11, 13, 29, 17, 19, 41, 23, 97, 53, 29, 31, 257, 137, 37, 1217, 41, 43, 89, 47, 97, 101, 53, 109, 113, 59, 61, 7937, 257, 67, 137, 71, 73, 149, 1217, 79, 641, 83, 337, 173, 89, 181, 11777]

cp's OEIS Frontend

A078683 Least prime of the form n*2^m+1 for m>0, or 0 if there is no such prime.

Table of values

List of values