A234388 - cp's OEIS frontend

A234388 Primes of the form 2^k*(2^{phi(m)} - 1) + 1, where k and m are positive integers, and phi(.) is Euler's totient function.

n	a(n)
1	3
2	5
3	7
4	13
5	17
6	31
7	61
8	97
9	127
10	193
11	241
12	257
13	769
14	1009
15	1021
16	2017
17	4093
18	7681
19	8161
20	8191
21	12289
22	15361
23	16369
24	16381
25	32257
26	61441
27	64513
28	65521
29	65537
30	131041
31	131071
32	523777
33	524287
34	786433
35	1032193
36	1048573
37	4194301
38	8257537
39	8380417
40	16515073
41	16760833
42	16776961
43	16777153
44	16777213
45	67043329
46	132120577
47	134215681
48	268369921
49	536870401
50	1073479681
51	2013265921
52	2113929217
53	2146959361
54	2147483137
55	2147483647
56	3221225473
57	4293918721
58	17175674881
59	34359214081
60	34359738337

[3, 5, 7, 13, 17, 31, 61, 97, 127, 193, 241, 257, 769, 1009, 1021, 2017, 4093, 7681, 8161, 8191, 12289, 15361, 16369, 16381, 32257, 61441, 64513, 65521, 65537, 131041, 131071, 523777, 524287, 786433, 1032193, 1048573, 4194301, 8257537, 8380417, 16515073, 16760833, 16776961, 16777153, 16777213, 67043329, 132120577, 134215681, 268369921, 536870401, 1073479681, 2013265921, 2113929217, 2146959361, 2147483137, 2147483647, 3221225473, 4293918721, 17175674881, 34359214081, 34359738337]

cp's OEIS Frontend

A234388 Primes of the form 2^k*(2^{phi(m)} - 1) + 1, where k and m are positive integers, and phi(.) is Euler's totient function.

Table of values

List of values