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 A112405 Numbers k such that k^9 - 3 is prime. 3

%I

%S 2,20,22,46,74,76,104,110,112,140,196,206,212,322,332,386,434,440,572,

%T 602,764,766,806,812,820,986,1070,1076,1160,1334,1396,1402,1432,1460,

%U 1574,1630,1636,1660,1760,1802,2026,2036,2066,2080,2132,2134,2192,2200

%N Numbers k such that k^9 - 3 is prime.

%H Daniel Starodubtsev, <a href="/A112405/b112405.txt">Table of n, a(n) for n = 1..10000</a>

%e If k=140 then k^9 - 3 = 20661046783999999997 (prime).

%t Select[ Range[2, 2233], PrimeQ[ #^9 - 3] &] (* _Robert G. Wilson v_, Jan 26 2006 *)

%o (PARI) is(n)=isprime(n^9-3) \\ _Charles R Greathouse IV_, Jun 06 2017

%K nonn,easy

%O 1,1

%A _Parthasarathy Nambi_, Jan 25 2006

%E Edited and extended by _Robert G. Wilson v_, Jan 26 2006

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Last modified January 27 23:41 EST 2022. Contains 350654 sequences. (Running on oeis4.)