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A063641 Primes of form p*q*r - 2, where p, q and r are primes (not necessarily distinct). 2

%I #10 Jun 28 2018 21:46:06

%S 43,61,73,97,103,151,163,173,193,229,271,277,283,331,367,383,397,421,

%T 433,463,547,593,601,607,613,643,661,709,739,757,773,859,883,907,929,

%U 967,1013,1021,1063,1093,1103,1129,1171,1181,1231,1237,1249,1279,1307

%N Primes of form p*q*r - 2, where p, q and r are primes (not necessarily distinct).

%H Harry J. Smith, <a href="/A063641/b063641.txt">Table of n, a(n) for n = 1..1000</a>

%o (PARI) { n=0; for (m=1, 10^9, p=prime(m); if (bigomega(p + 2) == 3, write("b063641.txt", n++, " ", p); if (n==1000, break)) ) } \\ _Harry J. Smith_, Aug 26 2009

%Y Cf. A014612, A063639.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Jul 21 2001

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Last modified June 3 18:01 EDT 2024. Contains 373064 sequences. (Running on oeis4.)