A207293 - cp's OEIS frontend

A207293 Primes p whose digit sum s(p) is also prime but whose iterated digit sum s(s(p)) is not prime.

n	a(n)
1	67
2	89
3	139
4	157
5	179
6	193
7	197
8	199
9	229
10	269
11	283
12	337
13	359
14	373
15	379
16	397
17	409
18	449
19	463
20	467
21	487
22	557
23	571
24	577
25	593
26	607
27	643
28	647
29	661
30	683
31	719
32	733
33	739
34	751
35	757
36	773
37	809
38	823
39	827
40	829
41	863
42	881
43	883
44	919
45	937
46	953
47	971
48	991
49	1039
50	1093
51	1097
52	1129
53	1187

[67, 89, 139, 157, 179, 193, 197, 199, 229, 269, 283, 337, 359, 373, 379, 397, 409, 449, 463, 467, 487, 557, 571, 577, 593, 607, 643, 647, 661, 683, 719, 733, 739, 751, 757, 773, 809, 823, 827, 829, 863, 881, 883, 919, 937, 953, 971, 991, 1039, 1093, 1097, 1129, 1187]

cp's OEIS Frontend

A207293 Primes p whose digit sum s(p) is also prime but whose iterated digit sum s(s(p)) is not prime.

Table of values

List of values