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Palindromic primes made of nontrivial runs of identical digits.
0

%I #2 Mar 30 2012 17:40:36

%S 11,1177711,7722277,7733377,331111133,772222277,779999977,992222299,

%T 995555599,11006660011,11117771111,11119991111,11155555111,

%U 11188888111,11442224411,11447774411,11663336611,11668886611

%N Palindromic primes made of nontrivial runs of identical digits.

%C A run of length 1 is trivial.

%Y Cf. A033023, A034873.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 13 2006