From: utzoo!decvax!ucbvax!C70:ARPAVAX:CAD:teklabs!tekid!davide
Newsgroups: net.math
Title: Re: Re: numeros lindos
Article-I.D.: tekid.109
Posted: Wed Jun 23 07:52:51 1982
Received: Mon Jun 28 01:34:41 1982

Oops... In my previous reply to the numeros lindos query, I said there was
only one "pretty number" of n digits.  shallit stated in his follow-article
that there were exactly two for every n.  This is close, but not completely
correct.  There are two for most n.  

In my previous reply, I mentioned the series that begins 6, 76, 376, 9376,
109376.  I forgot the series that starts 5, 25, 625, 90625, 890625.  Note
that for n=1,2,3,6 there are two automorphic numbers in base 10, but for
n=4,5 there are only two.  For higher values of n, there are *usually* two.

        David Eby
        Tektronix, Instrument Division