cp's OEIS Frontend

A099268 For each single digit {0,1,...,9} record the smallest prime made up of copies of that digit or 0 if no such prime exists; repeat for all of the C(10,2) = 45 pairs of distinct decimal digits; then for all triples; etc.

%I A099268 #2 Mar 30 2012 17:31:06
%S A099268 0,11,2,3,0,5,0,7,0,0,101,0,0,0,0,0,0,0,0,211,13,41,151,61,17,181,19,
%T A099268 23,0,0,0,227,0,29,43,53,0,37,83,0,0,0,47,0,499,0,557,0,59,67,0,0,787,
%U A099268 79,89,1021,103,401,5101,601,701,8101,109,2003,0,0,0,2027,0,2029,4003,503
%N A099268 For each single digit {0,1,...,9} record the smallest prime made up of copies of that digit or 0 if no such prime exists; repeat for all of the C(10,2) = 45 pairs of distinct decimal digits; then for all triples; etc.
%e A099268 There are no primes that consist of copies of the digit 4, or 6, or 8, or 9, or {0,2}, or {0,3}, etc.
%Y A099268 Cf. A099651, A099756, A016112.
%K A099268 base,nonn,easy,fini
%O A099268 1,2
%A A099268 _Robert G. Wilson v_, Nov 16 2004