%I A063400
%S A063400 561,8911,75361,997633,9890881,99861985,993905641,9999109081,
%T A063400 99976607641,999629786233,9999501351841,99994742993377,999922265173441,
%U A063400 9999924433632001
%N A063400 Largest n-digit Carmichael numbers.
%e A063400 a(2)=8911, so 8911 is the largest 4 digit Carmichael number
%Y A063400 Cf. A062568, A062852, A048123.
%Y A063400 Sequence in context: A135720 A097130 A110889 this_sequence A141706 A083736 
               A006931
%Y A063400 Adjacent sequences: A063397 A063398 A063399 this_sequence A063401 A063402 
               A063403
%K A063400 hard,more,nonn,base
%O A063400 3,1
%A A063400 Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 17 2002