A062679: Something's wrong

David Wilson davidwwilson at comcast.net
Sun May 8 05:53:31 CEST 2005


Re: A062679: Something's wrongWhat might be interesting is: smallest composite number whose every divisor > 1 includes n as a substring.
For n = 0, 1, 2, ... this sequence begins

10201,121,254,39,1849,25,16043,497,6889,1691,10201,111221,16129,13169,214411,...

  ----- Original Message ----- 
  From: זקיר סעידוב - ד\"ר/Zakir Seidov Ph.D. 
  To: ham ; rgwv at rgwv.com 
  Cc: Michele Dondi ; seqfan at ext.jussieu.fr 
  Sent: Friday, May 06, 2005 4:21 PM
  Subject: RE: A062679: Something's wrong


  Yes, such a SEQ is also of interest!
  Are you going to submit it, Bob?
  Zak
    -----Original Message----- 
    From: Robert G. Wilson v [mailto:rgwv at rgwv.com] 
    Sent: Fri 5/6/2005 8:39 PM 
    To: זקיר סעידוב - ד"ר/Zakir Seidov Ph.D. 
    Cc: Michele Dondi; seqfan at ext.jussieu.fr 
    Subject: Re: A062679: Something's wrong


    Or how about the sequence "Numbers n which are not prime which have the digit 9 in
    its divisors except 1. 1691 is the first such entry.
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