The Number 123: Properties and MeaningsPrime Factors of 123=3x41.
123 is a 42-gonal Number.
123 is a Lucas Number.
The Year 123 ADIn the year 123 AD was the death of King Artabanus II of Parthia. He was succeeded by Artabanus III.
In the year 123 AD Mug Nuadat defeated Irish king Conn of the Hundred Battles.
In the year 123 AD Chinese scientist Zhang Heng corrected the calendar to bring it into line with the seasons.
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