A232085 - cp's OEIS frontend

A232085 Primes that can be written in binary representation as concatenation of two primes. That is, primes representable as p * 2^L + q, where p and q are primes, and L is the length of binary representation of q: L = A070939(q).

n	a(n)
1	11
2	23
3	29
4	31
5	43
6	47
7	59
8	61
9	71
10	79
11	83
12	109
13	113
14	127
15	151
16	157
17	167
18	179
19	181
20	191
21	229
22	233
23	239
24	241
25	251
26	271
27	283
28	317
29	349
30	353
31	359
32	367
33	373
34	379
35	383
36	431
37	433
38	439
39	457
40	463
41	467
42	479
43	487
44	491
45	509
46	541
47	563
48	599
49	607
50	631
51	643
52	661
53	691
54	701
55	709
56	719

[11, 23, 29, 31, 43, 47, 59, 61, 71, 79, 83, 109, 113, 127, 151, 157, 167, 179, 181, 191, 229, 233, 239, 241, 251, 271, 283, 317, 349, 353, 359, 367, 373, 379, 383, 431, 433, 439, 457, 463, 467, 479, 487, 491, 509, 541, 563, 599, 607, 631, 643, 661, 691, 701, 709, 719]

cp's OEIS Frontend

A232085 Primes that can be written in binary representation as concatenation of two primes. That is, primes representable as p * 2^L + q, where p and q are primes, and L is the length of binary representation of q: L = A070939(q).

Table of values

List of values

n	a(n)
1	11
2	23
3	29
4	31
5	43
6	47
7	59
8	61
9	71
10	79
11	83
12	109
13	113
14	127
15	151
16	157
17	167
18	179
19	181
20	191
21	229
22	233
23	239
24	241
25	251
26	271
27	283
28	317
29	349
30	353
31	359
32	367
33	373
34	379
35	383
36	431
37	433
38	439
39	457
40	463
41	467
42	479
43	487
44	491
45	509
46	541
47	563
48	599
49	607
50	631
51	643
52	661
53	691
54	701
55	709
56	719

n	a(n)
1	11
2	23
3	29
4	31
5	43
6	47
7	59
8	61
9	71
10	79
11	83
12	109
13	113
14	127
15	151
16	157
17	167
18	179
19	181
20	191
21	229
22	233
23	239
24	241
25	251
26	271
27	283
28	317
29	349
30	353
31	359
32	367
33	373
34	379
35	383
36	431
37	433
38	439
39	457
40	463
41	467
42	479
43	487
44	491
45	509
46	541
47	563
48	599
49	607
50	631
51	643
52	661
53	691
54	701
55	709
56	719

n	a(n)
1	11
2	23
3	29
4	31
5	43
6	47
7	59
8	61
9	71
10	79
11	83
12	109
13	113
14	127
15	151
16	157
17	167
18	179
19	181
20	191
21	229
22	233
23	239
24	241
25	251
26	271
27	283
28	317
29	349
30	353
31	359
32	367
33	373
34	379
35	383
36	431
37	433
38	439
39	457
40	463
41	467
42	479
43	487
44	491
45	509
46	541
47	563
48	599
49	607
50	631
51	643
52	661
53	691
54	701
55	709
56	719