1779 1781

The Number 1780: Properties and Meanings

Prime Factors of 1780=2x2x5x89.

1780 is a 298-gonal Number.


The Year 1780 AD

In the year 1780 AD Benjamin Franklin invented bi-focal eyeglasses.

In the year 1780 AD Gervinus invents the circular saw.

1779 1781

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