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