| <1679 | Number Data-Base Random Number
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1681> |
The Number 1680: Properties and Meanings
Prime Factors of 1680=2x2x2x2x3x5x7.
1680 is an Octagonal Number.
The Year 1680 AD
In the year 1680 AD Athanasius Kircher died.(Esoteric History)| <1679 | Number Data-Base Random Number
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1681> |
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