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<639
Number Data-Base
Random Number
641>
The Number 640: Properties and Meanings
Prime Factors
of
640
=
2
x
2
x
2
x
2
x
2
x
2
x
2
x
5
.
640
is a
16-gonal Number
.
640
is a
108-gonal Number
.
The Year 640 AD
In the year
640
AD...
<639
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Random Number
641>
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