<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="font-family:arial,sans-serif;color:rgb(34,34,34)">On Tue, Oct 24, 2017 at 11:06 PM, Ben Coman </span><span dir="ltr" style="font-family:arial,sans-serif;color:rgb(34,34,34)"><<a href="mailto:btc@openinworld.com" target="_blank">btc@openinworld.com</a>></span><span style="font-family:arial,sans-serif;color:rgb(34,34,34)"> wrote:</span><br></div><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="gmail-h5">On Tue, Oct 24, 2017 at 11:25 PM, Bert Freudenberg <span dir="ltr"><<a href="mailto:bert@freudenbergs.de" target="_blank">bert@freudenbergs.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div class="gmail-m_5060621963273404501h5"><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="font-family:arial,sans-serif;color:rgb(34,34,34)">On Tue, Oct 24, 2017 at 5:14 PM, Chris Cunningham </span><span dir="ltr" style="font-family:arial,sans-serif;color:rgb(34,34,34)"><<a href="mailto:cunningham.cb@gmail.com" target="_blank">cunningham.cb@gmail.com</a>></span><span style="font-family:arial,sans-serif;color:rgb(34,34,34)"> wrote:</span><br></div></div></div><div class="gmail_extra"><div class="gmail_quote"><div><div class="gmail-m_5060621963273404501h5"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><span><div class="gmail_quote">On Mon, Oct 23, 2017 at 10:32 AM, Bert Freudenberg <span dir="ltr"><<a href="mailto:bert@freudenbergs.de" target="_blank">bert@freudenbergs.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote></span><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><div>The only somewhat commonly used bases are 2, 8, 10, 13, and 16, as far as I know.</div><span class="gmail-m_5060621963273404501m_569963046898279913m_-5013771829381095017HOEnZb"><font color="#888888"><div><br></div></font></span></div><span class="gmail-m_5060621963273404501m_569963046898279913m_-5013771829381095017HOEnZb"><font color="#888888"><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">- Bert -​</div></font></span></div></div></div>
</blockquote></div></span>Hi.</div><div class="gmail_extra"><br></div><div class="gmail_extra">I haven't run across a reason to use base 13.  What domain was that in?  Just curious,</div><div class="gmail_extra">cbc</div></div></blockquote></div></div><div><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">​</div><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">The answer is 42.</div></div><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">;)</div><span class="gmail-m_5060621963273404501HOEnZb"><font color="#888888"><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">- Bert -</div></font></span></div></div></div></blockquote><div><br></div></div></div><div>And Adams swears this was never planned.  Pure co-incidence that it worked out that way.  Hmmmmmm.....?</div><div>cheers -ben</div></div></div></div></blockquote><div><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">​Yep. For those not yet in on the joke:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">In Douglas Adams "Hitchhiker" trilogy the number 42 plays an important role, and at some point it was defined as 6x9. Intended as a joke, it turned out that this is actually correct in base 13, and can be written easily in Smalltalk, but not most other computer languages:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)"><div class="gmail_default">13r6 * 13r9 = 13r42 </div><div class="gmail_default">=> true</div><div><br></div></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(0,0,0)">- Bert -​</div><div> </div></div><br></div></div>