Date: Wed, 16 Nov 2005 17:57:13 +0000
Reply-To: toby dunn <tobydunn@HOTMAIL.COM>
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From: toby dunn <tobydunn@HOTMAIL.COM>
Subject: Re: Vampire Numbers
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Ian,
I am working on that problem as we speak. I am polishing a program that
finds vampire numbers in base ten, then as you and Nat suggested what
happens when one changes bases, and I guess we could always add the criteria
that a vampire number has to also follow in atleast one other base.
Toby Dunn
From: Ian Whitlock <iw1junk@COMCAST.NET>
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Subject: Re: Vampire Numbers
Date: Wed, 16 Nov 2005 17:53:58 +0000
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On the subject of vampire numbers Toby Dunn <tobydunn@HOTMAIL.COM> wrote in
part:
>>>>>>>>>>>>>>>>
However, the lasted count I found was;
4 digit 7 Vaps
6 digit 148 vamps
8 digits 3226 vamps
10 digits 108,577 vamps
the largest vampire number ever found so far as I can tell is:
98765432109876543210987654321098765432108990776898
x 98765432109876543210987654321099765432110002523486 =
975461057985063252587258039937610852004851098287639443706725069199204619314
1970418786383479631226428
<<<<<<<<<<<<<<<<<
All of this is in base 10. Now what are the vampire numbers for base 16,
and
to make it interesting base 24? Let's say that a vampire number is an
unusual
vampire number if it is vampire in more than one base. Are there any
unusal vampires?
Ian Whitlock
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