A341017 - cp's OEIS frontend

A341017 Primes p such that placing digit i at both ends of p produces another prime for at least two of i = [1,3,7, 9].

n	a(n)
1	2
2	5
3	17
4	23
5	29
6	31
7	41
8	43
9	47
10	53
11	61
12	67
13	71
14	73
15	83
16	101
17	107
18	113
19	131
20	149
21	197
22	239
23	241
24	257
25	263
26	269
27	293
28	317
29	347
30	359
31	389
32	401
33	421
34	431
35	443
36	503
37	521
38	557
39	593
40	599
41	607
42	641
43	647
44	677
45	683
46	701
47	757
48	797
49	827
50	887
51	911
52	953
53	1031
54	1103
55	1109
56	1117
57	1171
58	1181
59	1187
60	1223
61	1277

[2, 5, 17, 23, 29, 31, 41, 43, 47, 53, 61, 67, 71, 73, 83, 101, 107, 113, 131, 149, 197, 239, 241, 257, 263, 269, 293, 317, 347, 359, 389, 401, 421, 431, 443, 503, 521, 557, 593, 599, 607, 641, 647, 677, 683, 701, 757, 797, 827, 887, 911, 953, 1031, 1103, 1109, 1117, 1171, 1181, 1187, 1223, 1277]

cp's OEIS Frontend

A341017 Primes p such that placing digit i at both ends of p produces another prime for at least two of i = [1,3,7, 9].

Table of values

List of values