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## The Number **17**: Properties and Meanings

**17**is a Prime Number.

**17** can be Partitioned in 297 ways.

**17** can be Partitioned 9 times with each term no larger than 2.

**17** can be Partitioned 33 times with each term no larger than 3

**17** can be Partitioned 72 times with each term no larger than 4

**17** can be Partitioned 119 times with each term no larger than 5

**17** can be Partitioned 163 times with each term no larger than 6

**17** can be Partitioned 201 times with each term no larger than 7

**17** can be Partitioned 230 times with each term no larger than 8

**17** can be Partitioned 252 times with each term no larger than 9

**17** can be Partitioned 267 times with each term no larger than 10

**17** can be Partitioned 278 times with each term no larger than 11

**17** can be Partitioned 285 times with each term no larger than 12

**17** can be Partitioned 290 times with each term no larger than 13

**17** can be Partitioned 293 times with each term no larger than 14

**17** can be Partitioned 295 times with each term no larger than 15

**17** can be Partitioned 296 times with each term no larger than 16

No odd Fibonacci Number is divisible by **17**.

There are exactly **17** ways to express **17** as the sum of 1 or more primes.

**17** is the only integer which is equal to the number of prime partitions of itself.

There are **17** distinct sets of regular polygons that can be packed around a point (e.g., 4 squares, 2 hexagons and 2 triangles, etc).

The Chemical Element Chlorine has an atomic number of **17**.

There are **17** muscles in the Human tongue.

"The prime number **17** accommodates all the positive-negative, quanta-wave primes up to and including the number 18, which in turn accommodates the two nines of the invisible twoness of all systems." (Quoted from from Section 1238.43 of Synergetics by R. Buckminster Fuller.)

Some people believed that the Sky was divided into **17** celestial layers.

Jâbir Ibn Hayyân, in his book "Book of the Seventy" (Kitâb al-sab'în) attaches a very great importance to the numerical series: 1, 3, 5, 8 and 28 (the sum of 1, 3, 5 and 8 giving **17**), because according to him: "All, in the universe, is governed by the number **17** - the metals for example have **17** 'power'" and the form of any thing in the world is **17**.

The Alhambra, splendid Moor palace which inspired Escher, has **17** types of mosaic (in fact all possible types).

For the ancient Greeks, **17** represents the number of consonants of the alphabet; it is divided in 9 (number of the dumb consonants) and in 8 (number of the semivowels or semi-consonants). These numbers were also in relation with the musical theory and the harmony of the spheres.

The Japanese verse form known as Haiku contains exactly **17** syllables. Note that it consists of 3 lines, with 5, 7, and 5 syllables, respectively.

Frank Bunker Gibreth, the founder of modern motion study technique, concluded that the fundamental motions of the hands of a worker consists of **17** divisions.

King Tutankhamen was wrapped in **17** cloths.

### The Year 17 AD

In the year**17**AD Ephesus and other cities were overturned by earthquake.

In the year **17** AD Germanicus of Rome celebrated a victory over the Germanic tribes

In the year **17** AD Ovid, the Roman poet died.

In the year **17** AD Livy, the Roman historian died.

In the year **17** AD Gaius Julius Hyginus, Roman author died.

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