A187023 - cp's OEIS frontend

A187023 a(n) is the smallest prime factor of n^n-1 having the form k*n+1.

n	a(n)
2	3
3	13
4	5
5	11
6	7
7	29
8	17
9	19
10	11
11	15797
12	13
13	53
14	7027567
15	61
16	17
17	10949
18	19
19	109912203092239643840221
20	41
21	43
22	23
23	461
24	73
25	101
26	937
27	109
28	29
29	59
30	31
31	568972471024107865287021434301977158534824481
32	257
33	67
34	103
35	281
36	37
37	149
38	191
39	157
40	41

[3, 13, 5, 11, 7, 29, 17, 19, 11, 15797, 13, 53, 7027567, 61, 17, 10949, 19, 109912203092239643840221, 41, 43, 23, 461, 73, 101, 937, 109, 29, 59, 31, 568972471024107865287021434301977158534824481, 257, 67, 103, 281, 37, 149, 191, 157, 41]

cp's OEIS Frontend

A187023 a(n) is the smallest prime factor of n^n-1 having the form k*n+1.

Table of values

List of values