A080715 - cp's OEIS frontend

A080715 Numbers k such that for any positive integers (a, b), if a * b = k then a + b is prime.

n	a(n)
1	1
2	2
3	6
4	10
5	22
6	30
7	42
8	58
9	70
10	78
11	82
12	102
13	130
14	190
15	210
16	310
17	330
18	358
19	382
20	442
21	462
22	478
23	562
24	658
25	742
26	838
27	862
28	970
29	1038
30	1222
31	1282
32	1318
33	1618
34	1810
35	1870
36	1978
37	2038
38	2062
39	2098
40	2242
41	2398
42	2458
43	2578
44	2902
45	2938
46	2962
47	3018
48	3082
49	3322
50	3642
51	3862
52	4218
53	4258
54	4282
55	4678
56	5098
57	5590
58	5938
59	6042
60	6078

[1, 2, 6, 10, 22, 30, 42, 58, 70, 78, 82, 102, 130, 190, 210, 310, 330, 358, 382, 442, 462, 478, 562, 658, 742, 838, 862, 970, 1038, 1222, 1282, 1318, 1618, 1810, 1870, 1978, 2038, 2062, 2098, 2242, 2398, 2458, 2578, 2902, 2938, 2962, 3018, 3082, 3322, 3642, 3862, 4218, 4258, 4282, 4678, 5098, 5590, 5938, 6042, 6078]

cp's OEIS Frontend

A080715 Numbers k such that for any positive integers (a, b), if a * b = k then a + b is prime.

Table of values

List of values