A125525 - cp's OEIS frontend

A125525 Centrist primes: primes such that both the right half and the left half of the prime are prime.

n	a(n)
1	2
2	3
3	5
4	7
5	23
6	37
7	53
8	73
9	223
10	227
11	233
12	257
13	263
14	277
15	283
16	293
17	307
18	313
19	317
20	337
21	347
22	353
23	367
24	373
25	383
26	397
27	503
28	523
29	547
30	557
31	563
32	577
33	587
34	593
35	727
36	733
37	743
38	757
39	773
40	787
41	797
42	1103
43	1117
44	1123
45	1129
46	1153
47	1171
48	1303
49	1307
50	1319
51	1361
52	1367

[2, 3, 5, 7, 23, 37, 53, 73, 223, 227, 233, 257, 263, 277, 283, 293, 307, 313, 317, 337, 347, 353, 367, 373, 383, 397, 503, 523, 547, 557, 563, 577, 587, 593, 727, 733, 743, 757, 773, 787, 797, 1103, 1117, 1123, 1129, 1153, 1171, 1303, 1307, 1319, 1361, 1367]

cp's OEIS Frontend

A125525 Centrist primes: primes such that both the right half and the left half of the prime are prime.

Table of values

List of values