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<1667 | Number Data-BaseRandom Number |
1669> |

## 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.

<1667 | Number Data-BaseRandom Number |
1669> |

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