A068811 - cp's OEIS frontend

A068811 Numbers k such that k and its 10's complement (10^d-k, where d is the number of digits in k) are both primes.

n	a(n)
1	3
2	5
3	7
4	11
5	17
6	29
7	41
8	47
9	53
10	59
11	71
12	83
13	89
14	97
15	113
16	137
17	173
18	179
19	191
20	227
21	239
22	257
23	281
24	317
25	347
26	353
27	359
28	383
29	401
30	431
31	443
32	479
33	491
34	509
35	521
36	557
37	569
38	599
39	617
40	641
41	647
42	653
43	683
44	719
45	743
46	761
47	773
48	809
49	821
50	827
51	863
52	887
53	911
54	929
55	941

[3, 5, 7, 11, 17, 29, 41, 47, 53, 59, 71, 83, 89, 97, 113, 137, 173, 179, 191, 227, 239, 257, 281, 317, 347, 353, 359, 383, 401, 431, 443, 479, 491, 509, 521, 557, 569, 599, 617, 641, 647, 653, 683, 719, 743, 761, 773, 809, 821, 827, 863, 887, 911, 929, 941]

cp's OEIS Frontend

A068811 Numbers k such that k and its 10's complement (10^d-k, where d is the number of digits in k) are both primes.

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	11
5	17
6	29
7	41
8	47
9	53
10	59
11	71
12	83
13	89
14	97
15	113
16	137
17	173
18	179
19	191
20	227
21	239
22	257
23	281
24	317
25	347
26	353
27	359
28	383
29	401
30	431
31	443
32	479
33	491
34	509
35	521
36	557
37	569
38	599
39	617
40	641
41	647
42	653
43	683
44	719
45	743
46	761
47	773
48	809
49	821
50	827
51	863
52	887
53	911
54	929
55	941

n	a(n)
1	3
2	5
3	7
4	11
5	17
6	29
7	41
8	47
9	53
10	59
11	71
12	83
13	89
14	97
15	113
16	137
17	173
18	179
19	191
20	227
21	239
22	257
23	281
24	317
25	347
26	353
27	359
28	383
29	401
30	431
31	443
32	479
33	491
34	509
35	521
36	557
37	569
38	599
39	617
40	641
41	647
42	653
43	683
44	719
45	743
46	761
47	773
48	809
49	821
50	827
51	863
52	887
53	911
54	929
55	941

n	a(n)
1	3
2	5
3	7
4	11
5	17
6	29
7	41
8	47
9	53
10	59
11	71
12	83
13	89
14	97
15	113
16	137
17	173
18	179
19	191
20	227
21	239
22	257
23	281
24	317
25	347
26	353
27	359
28	383
29	401
30	431
31	443
32	479
33	491
34	509
35	521
36	557
37	569
38	599
39	617
40	641
41	647
42	653
43	683
44	719
45	743
46	761
47	773
48	809
49	821
50	827
51	863
52	887
53	911
54	929
55	941