A254751 - cp's OEIS frontend

A254751 Numbers such that, in base 10, all their proper prefixes and suffixes represent primes.

n	a(n)
1	22
2	23
3	25
4	27
5	32
6	33
7	35
8	37
9	52
10	53
11	55
12	57
13	72
14	73
15	75
16	77
17	237
18	297
19	313
20	317
21	373
22	537
23	597
24	713
25	717
26	737
27	797
28	2337
29	2397
30	2937
31	3113
32	3137
33	3173
34	3797
35	5937
36	5997
37	7197
38	7337
39	7397
40	29397
41	31373
42	37937
43	59397
44	73313
45	739397

[22, 23, 25, 27, 32, 33, 35, 37, 52, 53, 55, 57, 72, 73, 75, 77, 237, 297, 313, 317, 373, 537, 597, 713, 717, 737, 797, 2337, 2397, 2937, 3113, 3137, 3173, 3797, 5937, 5997, 7197, 7337, 7397, 29397, 31373, 37937, 59397, 73313, 739397]

cp's OEIS Frontend

A254751 Numbers such that, in base 10, all their proper prefixes and suffixes represent primes.

Table of values

List of values