A064083 - cp's OEIS frontend

A064083 Zsigmondy numbers for a = 7, b = 1: Zs(n, 7, 1) is the greatest divisor of 7^n - 1^n (A024075) that is relatively prime to 7^m - 1^m for all positive integers m < n.

n	a(n)
1	6
2	1
3	19
4	25
5	2801
6	43
7	137257
8	1201
9	39331
10	2101
11	329554457
12	2353
13	16148168401
14	102943
15	4956001
16	2882401
17	38771752331201
18	117307
19	1899815864228857
20	1129901
21	11898664849
22	247165843
23	4561457890013486057
24	5762401
25	79797014141614001

[6, 1, 19, 25, 2801, 43, 137257, 1201, 39331, 2101, 329554457, 2353, 16148168401, 102943, 4956001, 2882401, 38771752331201, 117307, 1899815864228857, 1129901, 11898664849, 247165843, 4561457890013486057, 5762401, 79797014141614001]

cp's OEIS Frontend

A064083 Zsigmondy numbers for a = 7, b = 1: Zs(n, 7, 1) is the greatest divisor of 7^n - 1^n (A024075) that is relatively prime to 7^m - 1^m for all positive integers m < n.

Table of values

List of values