A383065 - cp's OEIS frontend

A383065 Integers k such that (k/rad(k))*2^rad(k) - 1 is prime where rad = A007947.

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	12
8	13
9	16
10	17
11	18
12	19
13	27
14	31
15	36
16	50
17	60
18	61
19	64
20	80
21	89
22	107
23	108
24	112
25	127
26	135
27	147
28	189
29	200
30	212
31	243
32	252
33	343
34	448
35	464
36	500
37	521
38	576
39	600
40	607
41	612
42	648
43	675
44	688
45	756
46	768
47	784
48	800
49	832
50	875
51	900
52	1058
53	1212
54	1279
55	1280

[2, 3, 4, 5, 7, 9, 12, 13, 16, 17, 18, 19, 27, 31, 36, 50, 60, 61, 64, 80, 89, 107, 108, 112, 127, 135, 147, 189, 200, 212, 243, 252, 343, 448, 464, 500, 521, 576, 600, 607, 612, 648, 675, 688, 756, 768, 784, 800, 832, 875, 900, 1058, 1212, 1279, 1280]

cp's OEIS Frontend

A383065 Integers k such that (k/rad(k))*2^rad(k) - 1 is prime where rad = A007947.

Table of values

List of values