The Curta.org Bulletin Board Forum Index The Curta.org Bulletin Board
Welcome to the Curta.org Information Exchange Forum for the Curta Enthusiast Community
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

8128 - The "perfect" Curta

 
Post new topic   Reply to topic    The Curta.org Bulletin Board Forum Index -> History
View previous topic :: View next topic  
Author Message
ricky



Joined: 17 Jan 2017
Posts: 8
Location: Devon, UK
PostPosted: Wed Jan 18, 2017 9:05 am    Post subject: 8128 - The "perfect" Curta Reply with quote
8128 is a perfect number. A "Perfect" number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128. If you are fascinated by numbers (you are, right?) then you might be interested in seeing the type 1 with serial number 8128.

I wonder where it is?

You can see an auction of it here from 2003 when it sold for $599/£352:

http://www.christies.com/lotfinder/Lot/a-curta-calculator-type-i-4163896-details.aspx

All it said was "A Curta Calculator, Type I No. 8128, with eight slides, black finish and leather holder, in carton with instructions " with an image (lot 491)
_________________
"CALL, O CURTA!"
Back to top
View user's profile Send private message
Sebastian



Joined: 11 May 2014
Posts: 42
Location: Germany
PostPosted: Thu Feb 02, 2017 6:54 pm    Post subject: Reply with quote
I've got a Curta which is close by: 8121

Regards

Sebastian
_________________
Type I
5023
8121
11140
22146
22961
22983
26713
66561
80151
Type II
500438
502852
507157
509135
555001
555476
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    The Curta.org Bulletin Board Forum Index -> History All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group