# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a228268 Showing 1-1 of 1 %I A228268 #4 Aug 19 2013 09:42:58 %S A228268 107101,109103,127103,131101,131113,137131,139109,149101,149113, %T A228268 157103,157109,157127,163109,163127,163151,167107,167113,167149, %U A228268 173137,173149,179107,179167,179173,181157,191137,191173,193139,193163,193181,197101,197137,199103 %N A228268 Primes n of the form 1000p+q with primes p and q, 998>p>q>100. %C A228268 Primes that are the concatenation of two 3-digit primes, 998>p>q>100. There are exactly 1346 such primes. %H A228268 Harvey P. Dale, Table of n, a(n) for n = 1..1346 %t A228268 Sort[Select[1000Last[#]+First[#]&/@Subsets[Prime[Range[26,168]],{2}], PrimeQ]] %Y A228268 Cf. A168499 %K A228268 fini,full,nonn %O A228268 1,1 %A A228268 _Harvey P. Dale_, Aug 19 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE