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The Number 1668: Properties and Meanings

Prime Factors of 1668=2x2x3x139.

1668 is the number of + signs needed to write the Partitions of 17

1668 is the maximal number of regions into which space can be divided by 18 Spheres.


The Year 1668 AD

In the year 1668 AD Isaac Newton invented a reflecting telescope.

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