A073598 Numbers n such that n^3 + 5 is prime.

2, 12, 14, 24, 26, 38, 42, 48, 56, 66, 78, 86, 92, 104, 116, 126, 138, 146, 164, 186, 192, 194, 198, 224, 242, 264, 276, 296, 324, 332, 386, 438, 488, 494, 498, 518, 524, 566, 576, 582, 588, 594, 596, 632, 684, 696, 698, 714, 716, 722, 728, 738, 758, 762, 806

Offset: 1

Author

Zak Seidov, Sep 01 2002

Keywords

• nonn
• easy

Comments

For n^3+2 prime see A067200. For n^3+3 prime see A049441.

Links

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

Crossrefs

Cf. A067200, A049441.

Programs

Magma

[n: n in [1..900] | IsPrime(n^3 + 5)]; // Vincenzo Librandi, Sep 30 2012

Mathematica

Select[ Range[ 950 ], PrimeQ[ #^3+5 ] & ]

PARI

is(n)=isprime(n^3+5) \\ Charles R Greathouse IV, Jun 12 2017