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A144567 Primes of the form: smallest prime factor of n + largest prime factor of n, n > 1. 0

%I #10 Jul 21 2017 02:41:47

%S 5,7,5,5,7,13,5,7,19,5,7,13,5,7,5,31,7,13,19,5,7,43,13,7,5,7,19,5,13,

%T 31,61,7,13,19,73,5,7,13,7,5,43,19,31,13,7,5,13,7,103,19,109,5,13,31,

%U 61,19,7,13,43,7,13,7,19,139,73,5,31,151,7,19,13,7,5,43,13,19,31,13,61,181,7

%N Primes of the form: smallest prime factor of n + largest prime factor of n, n > 1.

%C This sequence is a reordering (with duplication) of A006512.

%Y Cf. A002808, A006512, A119689.

%K nonn,easy,less

%O 1,1

%A _Juri-Stepan Gerasimov_, Jan 04 2009

%E Comment, correction, and extension by _Charles R Greathouse IV_, Mar 29 2010

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)