> 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/programming_tasks/c/coprimes.md).

# Coprimes

```ruby
var pairs = [[21,15],[17,23],[36,12],[18,29],[60,15]]
say "The following pairs of numbers are coprime:"
pairs.grep { .gcd == 1 }.each { .say }
```

## Output:

```
The following pairs of numbers are coprime:
[17, 23]
[18, 29]
```