en.wikipedia.org/wiki/1,000,000,000

1,000,000,000 (one billion, short scale; one thousand million or milliard, yard,
long scale) is the ... 1000000007 – smallest prime number with 10 digits.

mathforum.org/sanders/geometry/GP10BillionEtc.html

If you sat down to count from one to one billion, you would be counting for 95
years. ... "Since most of the numbers between one and one trillion are even larger
...

www.quora.com/In-mathematics-how-many-zeros-does-a-million-and-a-billion-have

On the "long scale," one billion is 1 million million, or 1 and 12 zeroes (
1,000,000,000,000). ... There are two systems to assign the values to the
numbers, known as short system and long system. America and Britain uses
short system.

www.reference.com/math/many-zeros-one-billion-3c3dfef9acb6436d

In scientific notation, one billion is written as 1x10 to the ninth... ... If a person
wanted to count to one billion and could spit out numbers at the rate of three per ...

www.mit.edu/afs.new/sipb/contrib/pi/

One billion (10^9) digits of pi (actually 1,000,000,001 digits if you count the initial
"3") are in the file pi-billion.txt. The MD5 checksum is in pi-billion.md5. JA0HXV ...

www.math.com/tables/general/numnotation.htm

100,000, one hundred thousand, one hundred thousands ... billion,
1,000,000,000 (a thousand millions), 1,000,000,000,000 (a million millions) ...
Digits to the right of the decimal point represent the fractional part of the decimal
number.

ihtd.org/festivalguide/resources/how-much-is-a-trillion-dollars/

Let's Measure a Trillion in Numbers. We'll start simple: how big is a trillion on
paper? 1,000 = one thousand 1,000,000 = one million 1,000,000,000 = one
billion

math.about.com/od/glossaryofterms/a/zeros.htm

Aug 6, 2016 ... Numbers of Zeros in a Million, Billion, Trillion and More. How many ... For
example, you write one million as 1,000,000 rather than 1000000.

www.unc.edu/~rowlett/units/large.html

Thus billion and trillion are coined from the Latin prefixes bi- (n = 2) and tri- (n = 3
) .... This process can be continued indefinitely, but one has to stop somewhere.

www.theguardian.com/notesandqueries/query/0,5753,-61424,00.html

The American billion is one thousand million: 1,000,000,000. ... Numbers had
been separated into groups of six digits, but at this time the modern grouping of ...