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A166163 a(n) = the largest possible prime made by inserting either a 0 or a 1 anywhere in the binary representation of the n-th prime, then converting to decimal. 0

%I #7 Mar 11 2014 01:32:48

%S 5,7,13,13,23,29,41,43,47,61,61,101,89,107,79,109,107,109,163,199,149,

%T 157,211,181,197,229,199,211,173,241,251,263,281,331,293,311,349,419,

%U 359,349,359,373,383,449,421,397,467,479,467,461,467,479,433,503,769

%N a(n) = the largest possible prime made by inserting either a 0 or a 1 anywhere in the binary representation of the n-th prime, then converting to decimal.

%C The inserted digit may be placed, as well as between any digits, right of the rightmost digit or immediately left of the leftmost 1. No 1 can be placed between any leading 0's. A 0 may be placed immediately left of the leftmost 1 if no other primes can be created otherwise.

%K base,nonn

%O 1,1

%A _Leroy Quet_, Oct 08 2009

%E Extended by _Ray Chandler_, Oct 18 2009

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Last modified May 5 20:30 EDT 2024. Contains 372287 sequences. (Running on oeis4.)