The Number 1420: Properties and MeaningsPrime Factors of 1420=2x2x5x71.
1420 is a 238-gonal Number.
The Year 1420 ADIn the year 1420 oil painting was invented.
In the year 1420 Ulugh Beg, noted astronomer, had an observatory built at Samarkand in central Asia. The observatory was a 3-story building, but also contained instruments that were outdoors.
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