A243630 Primes p such that 2*p^3 - 3 is also prime.

2, 7, 11, 13, 47, 101, 107, 151, 163, 167, 251, 257, 401, 443, 467, 521, 571, 641, 653, 673, 797, 907, 911, 971, 983, 997, 1013, 1151, 1153, 1181, 1187, 1223, 1231, 1277, 1291, 1303, 1361, 1433, 1481, 1511, 1597, 1637, 1723, 1741, 1811, 1951, 2027, 2081, 2083, 2141, 2287, 2311

Offset: 1

Author

Vincenzo Librandi, Jun 08 2014

Keywords

• nonn
• easy
• less

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A063908, A023204, A153507, A174363, A243595.

Programs

Magma

[p: p in PrimesUpTo(2500) | IsPrime(2*p^3 - 3)];

Mathematica

Select[Prime[Range[2500]], PrimeQ[2 #^3 - 3] &]