A209799 - cp's OEIS frontend

A209799 Composite numbers n such that the concatenation of the digits of the prime divisors of n is a prime number.

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	16
7	18
8	21
9	22
10	24
11	25
12	27
13	32
14	33
15	36
16	39
17	44
18	46
19	48
20	49
21	51
22	54
23	58
24	63
25	64
26	66
27	70
28	72
29	81
30	82
31	88
32	92
33	93
34	96
35	99
36	108
37	111
38	115
39	116
40	117
41	121
42	125
43	128
44	132
45	133
46	140
47	141
48	142
49	144
50	147
51	153
52	154
53	159
54	162
55	164
56	165
57	166
58	169
59	176
60	177

[4, 6, 8, 9, 12, 16, 18, 21, 22, 24, 25, 27, 32, 33, 36, 39, 44, 46, 48, 49, 51, 54, 58, 63, 64, 66, 70, 72, 81, 82, 88, 92, 93, 96, 99, 108, 111, 115, 116, 117, 121, 125, 128, 132, 133, 140, 141, 142, 144, 147, 153, 154, 159, 162, 164, 165, 166, 169, 176, 177]

cp's OEIS Frontend

A209799 Composite numbers n such that the concatenation of the digits of the prime divisors of n is a prime number.

Table of values

List of values

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	16
7	18
8	21
9	22
10	24
11	25
12	27
13	32
14	33
15	36
16	39
17	44
18	46
19	48
20	49
21	51
22	54
23	58
24	63
25	64
26	66
27	70
28	72
29	81
30	82
31	88
32	92
33	93
34	96
35	99
36	108
37	111
38	115
39	116
40	117
41	121
42	125
43	128
44	132
45	133
46	140
47	141
48	142
49	144
50	147
51	153
52	154
53	159
54	162
55	164
56	165
57	166
58	169
59	176
60	177

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	16
7	18
8	21
9	22
10	24
11	25
12	27
13	32
14	33
15	36
16	39
17	44
18	46
19	48
20	49
21	51
22	54
23	58
24	63
25	64
26	66
27	70
28	72
29	81
30	82
31	88
32	92
33	93
34	96
35	99
36	108
37	111
38	115
39	116
40	117
41	121
42	125
43	128
44	132
45	133
46	140
47	141
48	142
49	144
50	147
51	153
52	154
53	159
54	162
55	164
56	165
57	166
58	169
59	176
60	177

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	16
7	18
8	21
9	22
10	24
11	25
12	27
13	32
14	33
15	36
16	39
17	44
18	46
19	48
20	49
21	51
22	54
23	58
24	63
25	64
26	66
27	70
28	72
29	81
30	82
31	88
32	92
33	93
34	96
35	99
36	108
37	111
38	115
39	116
40	117
41	121
42	125
43	128
44	132
45	133
46	140
47	141
48	142
49	144
50	147
51	153
52	154
53	159
54	162
55	164
56	165
57	166
58	169
59	176
60	177