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A177104 Primes p such that 2*p^3-1 is also prime. 4
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

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

Adjacent sequences:  A177101 A177102 A177103 * A177105 A177106 A177107

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 15 2010

STATUS

approved

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Last modified June 24 17:58 EDT 2019. Contains 324330 sequences. (Running on oeis4.)