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 <19 Number Data-Base Random Number 21>

## The Number 20: Properties and Meanings

Prime Factors of 20=2x2x5.

20 can be Partitioned in 627 ways.

20 can be Partitioned 11 times with each term no larger than 2

20 can be Partitioned 44 times with each term no larger than 3

20 can be Partitioned 108 times with each term no larger than 4

20 can be Partitioned 192 times with each term no larger than 5

20 can be Partitioned 282 times with each term no larger than 6

20 can be Partitioned 364 times with each term no larger than 7

20 can be Partitioned 434 times with each term no larger than 8

20 can be Partitioned 488 times with each term no larger than 9

20 can be Partitioned 530 times with each term no larger than 10

20 can be Partitioned 560 times with each term no larger than 11

20 can be Partitioned 582 times with each term no larger than 12

20 can be Partitioned 597 times with each term no larger than 13

20 can be Partitioned 608 times with each term no larger than 14

20 can be Partitioned 615 times with each term no larger than 15

20 can be Partitioned 620 times with each term no larger than 16

20 can be Partitioned 623 times with each term no larger than 17

20 can be Partitioned 625 times with each term no larger than 18

20 can be Partitioned 626 times with each term no larger than 19

20 is the number of rooted trees with 6 vertices.

20 is an Abundant Number.

20= 2 + 4 + 6 + 8

20=1 + 3 + 6 + 10.

20 is a Tetrahedral Number.

20 is the total number of parts in all Partitions of 5.

The Dodecahedron is a Platonic Solid with 20 Vertices.

The Icosahedron is a Platonic Solid with 20 Faces.

The Chemical Element Calcium has an atomic number of 20.

Number of characters of the alphabet of bards.

Mathematical base (vigesimal numeration) in which worked the Gallic and the Mayas.

One month in the religious Mayan calendar contained twenty days.

In Humans: the 20 amino acids.

20 Massalia is a large and fairly bright Main belt asteroid.

### The Year 20 AD

In the year 20 AD Hillel the Elder, Talmudic scholar, died.

In the year 20 AD Tiberias was built on the Sea of Galilee by Herod Antipas, in honour of Tiberius.

 <19 Number Data-Base Random Number 21>

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