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A062678 Composite and every divisor (except 1) contains the digit 8. 2

%I

%S 6889,7387,23489,25187,31789,32287,34087,48721,50861,56689,60787,

%T 68143,68309,68641,68807,73289,73781,76807,78053,78409,78587,78943,

%U 78961,80089,81589,87487,88147,98023,98521,106489,106987,108389,110087

%N Composite and every divisor (except 1) contains the digit 8.

%e 7387 has divisors 83, 89 and 7387, each of which contains the digit 8.

%t fQ[n_, dgt_] := Union[ MemberQ[#, dgt] & /@ IntegerDigits@ Rest@ Divisors@ n][[1]]; Select[ Range[2, 110100], !PrimeQ[#] && fQ[#, 8] &] (* _Robert G. Wilson v_, Jun 11 2014 *)

%K base,easy,nonn

%O 0,1

%A _Erich Friedman_, Jul 04 2001

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Last modified October 18 08:04 EDT 2019. Contains 328146 sequences. (Running on oeis4.)