A384953 - cp's OEIS frontend

A384953 First of three consecutive primes whose concatenations, both forward and backward, are primes.

n	a(n)
1	313
2	359
3	383
4	449
5	619
6	787
7	827
8	907
9	1697
10	2503
11	2521
12	2857
13	3673
14	3853
15	4139
16	4363
17	4993
18	5281
19	5527
20	5563
21	5641
22	5851
23	6037
24	6043
25	6719
26	7019
27	7477
28	9281
29	10177
30	10459
31	13799
32	14009
33	15013
34	15511
35	17167
36	17209
37	19183
38	19423
39	20483
40	20743
41	21397
42	21407
43	25111

[313, 359, 383, 449, 619, 787, 827, 907, 1697, 2503, 2521, 2857, 3673, 3853, 4139, 4363, 4993, 5281, 5527, 5563, 5641, 5851, 6037, 6043, 6719, 7019, 7477, 9281, 10177, 10459, 13799, 14009, 15013, 15511, 17167, 17209, 19183, 19423, 20483, 20743, 21397, 21407, 25111]

cp's OEIS Frontend

A384953 First of three consecutive primes whose concatenations, both forward and backward, are primes.

Table of values

List of values