> For the complete documentation index, see [llms.txt](https://aup.nomi.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aup.nomi.dev/the-language/types-and-values/numbers.md).

# Numbers

## Syntax

### Decimal

```go
puts 3.14    // 3.14
puts 2.5     // 2.5
puts 1234    // 1234
puts 98      // 98
```

### Hexadecimal

```go
puts 0xff    // 255
puts 0xABC   // 2748
```

### Binary

To write binary number, use '0b' prefix and binary digits (0 or 1).

```c
puts 0b1       // 1
puts 0b100     // 4
```

{% hint style="info" %}
In aup, the range of number is 1.7E +/- 308 (15 digits).
{% endhint %}

## Implementation notes

// just a `double`