# Number 13

#### Feature

The number 13 is a Positive and Odd number. it's Inverse number is 0.076923076923077 and it's Counter number is -13. The number 13 can be divided by 1 ,13 without remainder of course. In addition, it's not a Perfect square and it's a Prime number.Now Let's use some trigonometric functions just for fun... Using the Sine Fuction: Sin(13°) gives 0.420, using the Cosine Function Cos(13°) gives 0.907 and using the Tangent Function tan(13°) gives 0.463.

#### Structure

13 contains 2 digits that summed up to 4. .In English this number should sounds like: thirteen. In addition, the digits that represents the number 13 are: one ,three.
The number 13 is a decimal number and it means that it represented in base 10. 13 can also be represented In different bases such as base two, that also known as Binary and looks like: 1101, base 8, that also known as Octal and looks like 15 and base 16, that also known as Hexadecimal and looks like: d. These are the the most common bases but of course, there are much more bases.

#### Possible Meanings for the number:

This number can represent an IP address such as: 0.0.1.3 This number can also represents a webcolor like : #000013

#### More Fibonacci Numbers

 Previous number 12 Binary (base two): 1101 Octal (base 8): 15 Hexadecimal (base 16): d Inverse: 0.076923076923077 Counter: -13 Divisible by: 1 ,13 Factorial number: 6227020800 Number of digits: 2 Prime Factorization: 13 Sum of digits: 4 This number can be ip : 0.0.1.3
 Next number 14 Even / Odd: Odd Unix Timestamp: Thu Jan 1 0:00:13 1970 Perfect square: NO Prime: YES Positive / Negative: Positive English: thirteen English digits: one ,three Sin: 0.420 Cos: 0.907 Tan: 0.463 Color Number: #000013 Fibonacci number: YES

#### Do you have any other meaning for this number? share it! tell us what you have on this special number:

The number is the seventh prime number, and seven is considered lucky.

Updated at : 14/02/2016

Considered very lucky to some.

Updated at : 02/02/2016

considered unlucky

Updated at : 19/10/2015
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