A245657 - cp's OEIS frontend

A245657 Primes p for which none of the concatenations p3, p9, 3p, 9p are primes.

n	a(n)
1	3
2	107
3	113
4	179
5	317
6	443
7	487
8	599
9	641
10	653
11	751
12	773
13	937
14	977
15	991
16	1021
17	1087
18	1103
19	1187
20	1201
21	1213
22	1217
23	1301
24	1409
25	1427
26	1439
27	1483
28	1553
29	1559
30	1579
31	1609
32	1637
33	1693
34	1747
35	1777
36	1787
37	1789
38	1861
39	1949
40	1987
41	1993
42	2081
43	2129
44	2239
45	2281
46	2287
47	2293
48	2351
49	2393
50	2477

[3, 107, 113, 179, 317, 443, 487, 599, 641, 653, 751, 773, 937, 977, 991, 1021, 1087, 1103, 1187, 1201, 1213, 1217, 1301, 1409, 1427, 1439, 1483, 1553, 1559, 1579, 1609, 1637, 1693, 1747, 1777, 1787, 1789, 1861, 1949, 1987, 1993, 2081, 2129, 2239, 2281, 2287, 2293, 2351, 2393, 2477]

cp's OEIS Frontend

A245657 Primes p for which none of the concatenations p3, p9, 3p, 9p are primes.

Table of values

List of values