A030460 - cp's OEIS frontend

A030460 Previous prime concatenated with this prime p is a prime.

n	a(n)
1	3
2	37
3	89
4	157
5	163
6	173
7	211
8	239
9	257
10	263
11	269
12	277
13	337
14	359
15	379
16	439
17	479
18	521
19	541
20	547
21	607
22	659
23	673
24	683
25	733
26	947
27	977
28	1019
29	1039
30	1187
31	1193
32	1213
33	1229
34	1277
35	1373
36	1459
37	1471
38	1663
39	1693
40	1721
41	1747
42	1867
43	1979
44	2081
45	2179

[3, 37, 89, 157, 163, 173, 211, 239, 257, 263, 269, 277, 337, 359, 379, 439, 479, 521, 541, 547, 607, 659, 673, 683, 733, 947, 977, 1019, 1039, 1187, 1193, 1213, 1229, 1277, 1373, 1459, 1471, 1663, 1693, 1721, 1747, 1867, 1979, 2081, 2179]

cp's OEIS Frontend

A030460 Previous prime concatenated with this prime p is a prime.

Table of values

List of values