A309935 - cp's OEIS frontend

A309935 Primes p such that the base-10 concatenation (p+1)||p is prime.

n	a(n)
1	3
2	23
3	41
4	101
5	107
6	113
7	179
8	191
9	197
10	263
11	269
12	281
13	293
14	311
15	353
16	383
17	389
18	419
19	443
20	491
21	521
22	569
23	659
24	683
25	701
26	761
27	773
28	809
29	821
30	839
31	881
32	887
33	911
34	947
35	1109
36	1217
37	1223
38	1229
39	1433
40	1481
41	1499
42	1559
43	1667
44	1697
45	1811
46	1901
47	1973
48	2069
49	2087
50	2099
51	2111
52	2129

[3, 23, 41, 101, 107, 113, 179, 191, 197, 263, 269, 281, 293, 311, 353, 383, 389, 419, 443, 491, 521, 569, 659, 683, 701, 761, 773, 809, 821, 839, 881, 887, 911, 947, 1109, 1217, 1223, 1229, 1433, 1481, 1499, 1559, 1667, 1697, 1811, 1901, 1973, 2069, 2087, 2099, 2111, 2129]

cp's OEIS Frontend

A309935 Primes p such that the base-10 concatenation (p+1)||p is prime.

Table of values

List of values