A224990 - cp's OEIS frontend

A224990 Primes p such that q = 2p^2 - 1 and 2p*q - 1 are also prime.

n	a(n)
1	3
2	13
3	157
4	181
5	739
6	829
7	937
8	1009
9	1093
10	1483
11	1621
12	1879
13	2311
14	2503
15	2647
16	2719
17	3079
18	4969
19	4999
20	5209
21	5431
22	5569
23	6163
24	6961
25	8161
26	8329
27	9349
28	9631
29	10399
30	10459
31	10531
32	10657
33	11131
34	11953
35	13063
36	18523
37	20149
38	20731
39	21391
40	21589
41	26317
42	27481
43	28111
44	28351
45	29023

[3, 13, 157, 181, 739, 829, 937, 1009, 1093, 1483, 1621, 1879, 2311, 2503, 2647, 2719, 3079, 4969, 4999, 5209, 5431, 5569, 6163, 6961, 8161, 8329, 9349, 9631, 10399, 10459, 10531, 10657, 11131, 11953, 13063, 18523, 20149, 20731, 21391, 21589, 26317, 27481, 28111, 28351, 29023]

cp's OEIS Frontend

A224990 Primes p such that q = 2p^2 - 1 and 2p*q - 1 are also prime.

Table of values

List of values

cp's OEIS Frontend

A224990 Primes p such that q = 2*p^2 - 1 and 2*p*q - 1 are also prime.

Table of values

List of values

A224990 Primes p such that q = 2p^2 - 1 and 2p*q - 1 are also prime.