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The Number 280: Properties and Meanings
Prime Factors of 280=2x2x2x5x7.280 is an Octagonal Number.
According to alien contactee Billy Meier there are 280 chemical elements in the universe, but it is a creational law that no single star contains all 280 of them.
The Year 280 AD
In the year 280 AD ...0 - 500 | 501 - 1000 | 1001 - 1500 | 1501 - 2000 | 2001 - 2500
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