# Talk:Babylonian numerals

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## Zero

Shouldn't there be a 0? One needs a 0 to write 60 (or 3600, 3601, ..) in Babylonian numerals, or..? Guaka 13:39, 6 Mar 2004 (UTC)

There were a zero but after; in the beginning the babylonians begun with no zero, 101 was written as 11. See the french page. Ellisllk 11:47, 1 Jul 2004 (UTC)

In the absense of Unicode support, the French version has some nifty images (such as [1]) for the numbers. Perhaps we should copy them. The French versions also mentions a decimal and a mixed decimal/sexagesimal system. -- ALoan (Talk) 19:31, 9 Nov 2004 (UTC)

What the Babylonians had instead was a space (and later a disambiguating placeholder symbol) to mark the nonexistence of a digit in a certain place value. What is the difference between a "disambiguating placeholder symbol" and a character for zero? Nik42 07:49, 26 August 2006 (UTC)

By Neugebauer "The exact sciences in antiquity" Dover, there was a zero, used for medial and leading, but not final positions. So they could write 1 second as 0.0.1 hours, and 3608 seconds as 1.0.8 hours, but there was no real way of writing numbers larger than sixty (outside of writing eg 82.5 as 1 22 30 Sixties. This is because the number system is used for fractions, not as a routine base. The symbol was the same as a sentence-end. Wendy.krieger (talk) 09:41, 2 January 2013 (UTC)

## Why base-60

Really, why base-60? That should be covered in this article. -- AllyUnion (talk) 19:28, 8 Feb 2005 (UTC)

Erm, second paragraph:
A common theory is that sixty was chosen due to its prime factorization 2*2*3*5 which makes it divisible by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30.
HTH. -- ALoan (Talk) 20:22, 8 Feb 2005 (UTC)

I thought it was at least based on the fact that the Babylonians realized there are 360 days in a year (plus the five that commemorate how Innana/Astarte/Ishtar descended into the underworld -- but they don't count!). That's where we get 360 degrees in a circle, isn't it? —Preceding unsigned comment added by 207.115.105.94 (talkcontribs) 13:01, 8 December 2005

Otto Neugebauer notes (The exact sciences in antiquity, 1952, p.19) that the ratio of the units of silver was 60 shekels per mana from the earliest of times, thousands of years before the length of a year was specified. Familiarity with this use in economic transactions led to its use as a number system—it had nothing to do with either the prime factors of 60 or the number of days in a year. — Joe Kress (talk) 22:55, 30 October 2010 (UTC)
O Neugebauer also notes that it was three score (ie 3 men), and also that there is a precursor of symbols for sixths. This is quite significant, since the sixtywise was used as a division system, rather than as a multiple system. Wendy.krieger (talk) 09:22, 21 January 2013 (UTC)