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The prime p times its index gives a number that is made of nontrivial runs of identical digits.
2

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

%S 11,37,222553,3981707,8141131,26706079,107244499,14956328279,

%T 15820183739,103577289271,168466166087,338351202499

%N The prime p times its index gives a number that is made of nontrivial runs of identical digits.

%C A run of length 1 is trivial.

%e p(4259192969)=103577289271 and

%e 4259192969*103577289271=441155662211122335599.

%Y Cf. A033023, A116058, A116060.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 13 2006