A187022 - cp's OEIS frontend

A187022 a(n) is the smallest prime factor of n^n+1 having the form k*n+1.

n	a(n)
2	5
3	7
4	257
5	521
6	13
7	113
8	97
9	73
10	101
11	23
12	193
13	13417
14	29
15	31
16	274177
17	45957792327018709121
18	37
19	108301
20	148721
21	337
22	9617835527609
23	47
24	33409
25	239201
26	53
27	163
28	449
29	233
30	61
31	373
32	641
33	661
34	6009977
35	71
36	22452257707354557235348829785471057921
37	593
38	202921
39	79
40	641

[5, 7, 257, 521, 13, 113, 97, 73, 101, 23, 193, 13417, 29, 31, 274177, 45957792327018709121, 37, 108301, 148721, 337, 9617835527609, 47, 33409, 239201, 53, 163, 449, 233, 61, 373, 641, 661, 6009977, 71, 22452257707354557235348829785471057921, 593, 202921, 79, 641]

cp's OEIS Frontend

A187022 a(n) is the smallest prime factor of n^n+1 having the form k*n+1.

Table of values

List of values