This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A067779 #7 May 18 2013 16:49:30 %S A067779 11353,13513,15313,15331,31153,31513,31531,33151,35311,51133,53113, %T A067779 1125221,1212251,1212521,1221251,1252211,1512221,2115221,2122151, %U A067779 2122511,2151221,2152211,2215211,2221511,2251121,2251211,5122121 %N A067779 Primes such that the sum of the squares of its digits is equal to the product of its digits. %e A067779 An eight-digit term is 11224121, a ten-digit term is 1111111843. %e A067779 11353 belongs to the sequence because 1^2+1^2+3^2+5^2+3^2=45=1*1*3*5*3 %o A067779 (PARI) forprime(p=2,6e6, n=p; sd=0; pd=1; while(n>0,d=divrem(n,10); n=d[1]; sd=sd+d[2]*d[2]; pd=pd*d[2]); if(sd==pd,print1(p,","))) %K A067779 easy,nonn,base %O A067779 1,1 %A A067779 _Felice Russo_, Feb 06 2002 %E A067779 Edited and extended by _Klaus Brockhaus_ Feb 11 2002