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%I #1 Jun 29 2008 03:00:00
%S 53,73,113,137,173,193,197,233,293,313,317,373,433,593,613,617,673,
%T 677,733,797,977,1013,1033,1093,1097,1277
%N Prime numbers of the form q*10^(floor(log(p))+1)+p, where p < q are primes also.
%C These numbers are called Caesar primes because the birth date of Julius Caesar (July 13th) provides one example of such a number, i.e. p=7 and q=13 give the prime 13*10+7=137.
%K nonn
%O 1,1
%A Tom Mueller (muel4503(AT)uni-trier.de), Dec 17 2007