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A180941 Numbers n such that n^2 - 2999n + 2248541 is semiprime. 0

%I #6 Dec 15 2017 17:37:11

%S 2,3,4,8,10,13,14,15,19,20,22,23,24,25,28,29,30,31,32,36,37,41,42,44,

%T 45,48,49,52,58,61,64,66,68,72,73,74,78,81,83,85,87,90,93,94,95,96,

%U 101,102,104,105,106,108,109,110,111,112,114,116,118,122,124,127,128,129,130

%N Numbers n such that n^2 - 2999n + 2248541 is semiprime.

%D Albert H. Beiler, Recreations in the Theory of Numbers, New York: Dover, 1966. Page 220.

%t Select[Range[200],PrimeOmega[#^2-2999#+2248541]==2&] (* _Harvey P. Dale_, Aug 12 2013 *)

%K easy,nonn

%O 1,1

%A _Jason Earls_, Sep 27 2010

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Last modified May 6 06:36 EDT 2024. Contains 372290 sequences. (Running on oeis4.)