A331046 - cp's OEIS frontend

A331046 Numbers k such that floor(k/10^m) is a prime number for some m >= 0.

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	20
10	21
11	22
12	23
13	24
14	25
15	26
16	27
17	28
18	29
19	30
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	38
28	39
29	41
30	43
31	47
32	50
33	51
34	52
35	53
36	54
37	55
38	56
39	57
40	58
41	59
42	61
43	67
44	70
45	71
46	72
47	73
48	74
49	75
50	76
51	77
52	78
53	79
54	83
55	89
56	97
57	101
58	103
59	107
60	109
61	110
62	111
63	112
64	113

[2, 3, 5, 7, 11, 13, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 43, 47, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 83, 89, 97, 101, 103, 107, 109, 110, 111, 112, 113]

cp's OEIS Frontend

A331046 Numbers k such that floor(k/10^m) is a prime number for some m >= 0.

Table of values

List of values

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	20
10	21
11	22
12	23
13	24
14	25
15	26
16	27
17	28
18	29
19	30
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	38
28	39
29	41
30	43
31	47
32	50
33	51
34	52
35	53
36	54
37	55
38	56
39	57
40	58
41	59
42	61
43	67
44	70
45	71
46	72
47	73
48	74
49	75
50	76
51	77
52	78
53	79
54	83
55	89
56	97
57	101
58	103
59	107
60	109
61	110
62	111
63	112
64	113

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	20
10	21
11	22
12	23
13	24
14	25
15	26
16	27
17	28
18	29
19	30
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	38
28	39
29	41
30	43
31	47
32	50
33	51
34	52
35	53
36	54
37	55
38	56
39	57
40	58
41	59
42	61
43	67
44	70
45	71
46	72
47	73
48	74
49	75
50	76
51	77
52	78
53	79
54	83
55	89
56	97
57	101
58	103
59	107
60	109
61	110
62	111
63	112
64	113

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	19
9	20
10	21
11	22
12	23
13	24
14	25
15	26
16	27
17	28
18	29
19	30
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	38
28	39
29	41
30	43
31	47
32	50
33	51
34	52
35	53
36	54
37	55
38	56
39	57
40	58
41	59
42	61
43	67
44	70
45	71
46	72
47	73
48	74
49	75
50	76
51	77
52	78
53	79
54	83
55	89
56	97
57	101
58	103
59	107
60	109
61	110
62	111
63	112
64	113