This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A062678 Composite and every divisor (except 1) contains the digit 8. 2
 6889, 7387, 23489, 25187, 31789, 32287, 34087, 48721, 50861, 56689, 60787, 68143, 68309, 68641, 68807, 73289, 73781, 76807, 78053, 78409, 78587, 78943, 78961, 80089, 81589, 87487, 88147, 98023, 98521, 106489, 106987, 108389, 110087 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS EXAMPLE 7387 has divisors 83, 89 and 7387, each of which contains the digit 8. MATHEMATICA 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 *) CROSSREFS Sequence in context: A013892 A154086 A064351 * A018848 A031581 A031761 Adjacent sequences:  A062675 A062676 A062677 * A062679 A062680 A062681 KEYWORD base,easy,nonn AUTHOR Erich Friedman, Jul 04 2001 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 17 22:53 EDT 2019. Contains 327147 sequences. (Running on oeis4.)