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A271799 Prime numbers whose reversal is a product of 3 distinct primes. 2

%I #24 Mar 17 2021 23:44:41

%S 223,269,281,457,499,839,1049,1289,1373,1459,1543,1609,2003,2011,2017,

%T 2027,2029,2053,2081,2087,2213,2221,2237,2239,2243,2267,2269,2293,

%U 2297,2441,2459,2609,2657,2659,2693,2699,2803,2833,2851,2857,2879,2887,2897,3449,3557

%N Prime numbers whose reversal is a product of 3 distinct primes.

%H Chai Wah Wu, <a href="/A271799/b271799.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[4000], PrimeQ[#] && Transpose[FactorInteger[IntegerReverse[#]]][[2]] == {1, 1, 1} &] (* _Tanya Khovanova_, Mar 16 2021 *)

%Y Cf. A270175, A007304.

%K nonn,base

%O 1,1

%A _Chai Wah Wu_, Apr 14 2016

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)