A127305 - cp's OEIS frontend

A127305 Primes p such that p + (sum of the prime factors of p-1) + (sum of prime factors of p+1) is prime.

n	a(n)
1	2
2	13
3	47
4	71
5	101
6	151
7	193
8	239
9	241
10	293
11	331
12	337
13	359
14	383
15	397
16	401
17	421
18	463
19	487
20	557
21	577
22	709
23	773
24	797
25	821
26	929
27	1019
28	1031
29	1069
30	1093
31	1103
32	1181
33	1217
34	1249
35	1327
36	1367
37	1423
38	1499
39	1571
40	1759
41	1787
42	1789
43	1831
44	1871
45	1877
46	1913
47	1933
48	2053

[2, 13, 47, 71, 101, 151, 193, 239, 241, 293, 331, 337, 359, 383, 397, 401, 421, 463, 487, 557, 577, 709, 773, 797, 821, 929, 1019, 1031, 1069, 1093, 1103, 1181, 1217, 1249, 1327, 1367, 1423, 1499, 1571, 1759, 1787, 1789, 1831, 1871, 1877, 1913, 1933, 2053]

cp's OEIS Frontend

A127305 Primes p such that p + (sum of the prime factors of p-1) + (sum of prime factors of p+1) is prime.

Table of values

List of values