A365475 - cp's OEIS frontend

A365475 a(n) is the first odd prime p such that A000120((2^n-1)p) = n A000120(p).

n	a(n)
1	3
2	5
3	17
4	17
5	257
6	257
7	257
8	257
9	65537
10	65537
11	65537
12	65537
13	65537
14	65537
15	65537
16	65537
17	4398054899713
18	4398054899713
19	4398054899713
20	1125899915231233
21	1125899915231233
22	1125899915231233
23	1125899915231233
24	2251799847239681
25	2251799847239681
26	1152921513196781569
27	1152921513196781569

[3, 5, 17, 17, 257, 257, 257, 257, 65537, 65537, 65537, 65537, 65537, 65537, 65537, 65537, 4398054899713, 4398054899713, 4398054899713, 1125899915231233, 1125899915231233, 1125899915231233, 1125899915231233, 2251799847239681, 2251799847239681, 1152921513196781569, 1152921513196781569]

cp's OEIS Frontend

A365475 a(n) is the first odd prime p such that A000120((2^n-1)p) = n A000120(p).

Table of values

List of values

cp's OEIS Frontend

A365475 a(n) is the first odd prime p such that A000120((2^n-1)*p) = n * A000120(p).

Table of values

List of values

A365475 a(n) is the first odd prime p such that A000120((2^n-1)p) = n A000120(p).