login
A177104
Primes p such that 2*p^3-1 is also prime.
9
3, 31, 43, 61, 139, 181, 199, 223, 241, 331, 373, 421, 523, 631, 733, 859, 991, 1033, 1153, 1213, 1423, 1453, 1549, 1741, 1873, 1879, 1951, 2203, 2239, 2269, 2311, 2371, 2539, 2689, 2713, 2719, 2851, 3001, 3019, 3163, 3229, 3271, 3343, 3361, 3391, 3541
OFFSET
1,1
LINKS
FORMULA
A000040 INTERSECT A214289. - R. J. Mathar, Aug 20 2019
MATHEMATICA
Select[Prime[Range[500]], PrimeQ[2 #^3 - 1]&] (* Vincenzo Librandi, Apr 17 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(10000)| IsPrime(2*p^3-1)];
CROSSREFS
Sequence in context: A198018 A211003 A068331 * A078330 A107210 A256473
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 15 2010
STATUS
approved