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The Number 1644: Properties and Meanings
Prime Factors of 1644=2x2x3x137.The Year 1644 AD
In the year 1644 AD the Qing Dynasty replaced the Ming Dynasty.0 - 500 | 501 - 1000 | 1001 - 1500 | 1501 - 2000 | 2001 - 2500
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