A361320 - cp's OEIS frontend

A361320 If n is composite, replace n with the concatenation of its nontrivial divisors, written in increasing order, each divisor being written in base 10 with its digits in reverse order, otherwise a(n) = n.

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	23
7	7
8	24
9	3
10	25
11	11
12	2346
13	13
14	27
15	35
16	248
17	17
18	2369
19	19
20	24501
21	37
22	211
23	23
24	2346821
25	5
26	231
27	39
28	24741
29	29
30	23560151
31	31
32	24861
33	311
34	271
35	57
36	234692181
37	37
38	291
39	331
40	24580102
41	41
42	23674112
43	43
44	241122
45	35951
46	232
47	47
48	23468216142
49	7
50	250152

[1, 2, 3, 2, 5, 23, 7, 24, 3, 25, 11, 2346, 13, 27, 35, 248, 17, 2369, 19, 24501, 37, 211, 23, 2346821, 5, 231, 39, 24741, 29, 23560151, 31, 24861, 311, 271, 57, 234692181, 37, 291, 331, 24580102, 41, 23674112, 43, 241122, 35951, 232, 47, 23468216142, 7, 250152]

cp's OEIS Frontend

A361320 If n is composite, replace n with the concatenation of its nontrivial divisors, written in increasing order, each divisor being written in base 10 with its digits in reverse order, otherwise a(n) = n.

Table of values

List of values