A250312 - cp's OEIS frontend

A250312 Numbers which produce primes if their divisors, one by one, are prepended, inserted or appended.

n	a(n)
1	1
2	151
3	157
4	169
5	223
6	277
7	283
8	337
9	361
10	367
11	397
12	409
13	421
14	439
15	457
16	469
17	547
18	571
19	577
20	589
21	607
22	643
23	673
24	709
25	757
26	769
27	793
28	871
29	877
30	937
31	1063
32	1093
33	1201
34	1603
35	1609
36	1807
37	2029
38	2053
39	2071
40	2707
41	3019
42	3037
43	3049
44	3073
45	3109
46	3607
47	4039
48	4051
49	4087

[1, 151, 157, 169, 223, 277, 283, 337, 361, 367, 397, 409, 421, 439, 457, 469, 547, 571, 577, 589, 607, 643, 673, 709, 757, 769, 793, 871, 877, 937, 1063, 1093, 1201, 1603, 1609, 1807, 2029, 2053, 2071, 2707, 3019, 3037, 3049, 3073, 3109, 3607, 4039, 4051, 4087]

cp's OEIS Frontend

A250312 Numbers which produce primes if their divisors, one by one, are prepended, inserted or appended.

Table of values

List of values