
Using SI units: Giga for 1,000,000,000 (9 zeros) and Tera for 1,000,000,000,000 (12 zeros)





1 zero. 1 billion == 1 gigabyte == 1,073,741,824 bytes
At least, that's how I count nowadays.





IOW, a "billion" has 11110 zeroes
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An infinite number, if you count leading zeros.
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How many would you like?
Short count == 1,000,000,000 == 9
Long count == 1,000,000,000,000 == 12
Very long count == 1,0000,0000,0000,0000 == 16





2 (possibly 3 if you count the leading one): 0x3B9ACA00
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None, Sir, that's an 'o'.





Long count is more logical.
Add six zeroes for every step in size
Million  1 000 000
Billion  1 000 000 000 000
Trillion  1 000 000 000 000 000 000





Quote: Add six zeroes for every step in size Argument against: other scales change prefix every three zeros (kilo, mega, giga, etc.)
Another argument for: "bi"  twice as many, hence 12, "tri" three times as many, hence 18
You can choose one side but it's hard to argue that's more "logical".
Mircea





Well, yes I can.
You don't have to agree, but that's another story.





Mircea Neacsu wrote: Another argument for: "bi"  twice as many, hence 12, "tri" three times as many, hence 18 Quad = 4 times as many...
Quadrillion = 10^24
Having 12 zeros for a billion is more consistent with the posterior numbers than having 9 zeros.
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No, not adding six. Either add three (short count) or double (long count).





I had actually thought that the metric was squaring them...
Million = A thousand times thousand
Billion = A million times a million
Trillion = A billion times a billion
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No. Not squaring. Raising to the power.
Billion=Bi million=million^2=10^12 zeros total
Trillion=Tri million=million^3=10^18 zeros total
Quadrillion=Quad million=million^4=10^24 zeros total
...(and so on)
You can think of it more easily using geometry. Assuming that your geometric shapes have all sides identical, and one side corresponds to one million (which is your base unit and has six zeros), a:
triangle=tri angle=three times the side=10^18 zeros total
quadrangle=quad angle=four times the side=10^24 zeros total
...(and so on)
I don't mention a "biangle" because that does not exist :P





A billion of what?
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food





A billion of zeroes, of course
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In Spain and Germany (and AFAIK another countries in the EU) one billion are 12 zeros
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17 zeros
111011100110101100101000000000






Exactly one, as in 10^x. Or none with Ex.





that's not a zero, it's a lowercase 'O'





Browsing through the answers I still think 9 is the best solution.
Just a couple of Why:
1  jives with scientific incrementation of values: every three orders of magnitude.
2  much easier to say "billion" vs "thousand million", for example
This isn't about taking sides for national pride  it's about very consistent usage across multiple domains of information. I live in a Fahrenheit country but water boils at 100C to me (for example).
If you like these other forms, then why not remain consistent and write 1000,000000 instead of 1,000,000,000 (commas or dots as you prefer) ?
There are always alternatives and fans for them, nationalistic and otherwise, but the threeperblock is more sensible.
Ravings en masse^ 

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