poliphilo: (Default)
poliphilo ([personal profile] poliphilo) wrote2009-11-14 11:18 am

Big Roman Numbers

The Romans only had symbols for numbers up to a thousand, so how did they cope with really big numbers- a million for instance? Surely they didn't write MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM......?  This was keeping me awake last night. 

I looked up the answer this morning. You put a bar across the top of a number and that shows you've multiplied it by a thousand. So a million is M with a bar across the top.  

Like so....



Simplicity itself! 

[identity profile] ibid.livejournal.com 2009-11-14 11:59 am (UTC)(link)
I love the fact you've put the toys in!

[identity profile] poliphilo.livejournal.com 2009-11-14 12:01 pm (UTC)(link)
It would have been dull without them. :)

[identity profile] veronica-milvus.livejournal.com 2009-11-14 01:03 pm (UTC)(link)
It looks like you are putting together your own version of Sesame Street - or maybe Playschool.

Is a billion an M with two bars above it?

[identity profile] poliphilo.livejournal.com 2009-11-14 01:15 pm (UTC)(link)
Playschool does Latin.

I think two Ms with bars would simply be two million. I'm not sure. I believe the Roman system would have trouble coping with very, very big numbers.

Which is one reason we switched over to the Arabic notation as soon as it became available.

[identity profile] veronica-milvus.livejournal.com 2009-11-14 01:25 pm (UTC)(link)
It must have been hell trying to do sums in Roman. I mean, how do you subtract CMIV from MCXDVI? Without an abacus it would be terrible.

[identity profile] poliphilo.livejournal.com 2009-11-14 01:48 pm (UTC)(link)
And yet the Romans were great engineers. They obviously managed somehow.

[identity profile] poliphilo.livejournal.com 2009-11-14 01:47 pm (UTC)(link)
Sorry, I misread that. Yes, I think that would work. I don't think it's common usage, though.
sovay: (I Claudius)

[personal profile] sovay 2009-11-14 05:41 pm (UTC)(link)
Like so....

That's adorable. It looks like children's television for twenty-first century Romans.

[identity profile] poliphilo.livejournal.com 2009-11-14 10:25 pm (UTC)(link)
This programme is brought to you by the numbers M and L

[identity profile] daisytells.livejournal.com 2009-11-14 05:47 pm (UTC)(link)
I wondered about that a couple of times, too, but not enough to research it.
I love your stuffed "pets"!

[identity profile] poliphilo.livejournal.com 2009-11-14 10:25 pm (UTC)(link)
We have loads of stuffed animals. Ailz went on a collecting spree a year or two back.

[identity profile] algabal.livejournal.com 2009-11-15 12:16 am (UTC)(link)
What a precious scene!

[identity profile] poliphilo.livejournal.com 2009-11-15 09:42 am (UTC)(link)
Thanks.