> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/syntax_and_semantics/literals/number.md).

# Number

```ruby
# Integers
say factorial(30)              #=> 265252859812191058636308480000000
say fibonacci(164)             #=> 8404037832974134882743767626780173

# Floating-point numbers
say sqrt(Num.pi)               #=> 1.7724538509055160272981674833[...]
say exp(1234)                  #=> 8.3059759373617942182585212913[...]e535

# Rational numbers
var x = 2/3
say x*3                        #=> 2
say 2/x                        #=> 3
say x.as_frac                  #=> 2/3

# Complex numbers
say Complex(3, 4)              #=> 3+4i
say 3+4.i                      #=> 3+4i
say sqrt(-4)                   #=> 2i
say log(-1)                    #=> 3.1415926535897932384626433832[...]i
```

The `Number` type (also aliased as `Num`) represents any Number object (including complex numbers):

```ruby
say 42.kind_of(Number)          #=> true
say sqrt(-1).kind_of(Number)    #=> true
```

Additionally, the `Number` class can be used for constructing new Number objects:

```ruby
Number("1234.52")         # set decimal number
Number("10110111", 2)     # set binary number
Number("deadbeef", 16)    # set hexadecimal number
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://trizen.gitbook.io/sidef-lang/syntax_and_semantics/literals/number.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.