RFactor

A small CLI utility to factor integers. Created as a replacement for the factor utility in GNU coreutils, though this is far slower and much less sophisticated.

Install it yourself with:

$ gem install r_factor

$ factor 12741 86157 31628
12741: 3 31 137
86157: 3 3 3 3191
31628: 2 2 7907
$ echo "123123123" | factor
123123123: 3 3 41 333667

Check out the repo then run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/michaelkitson/r_factor.

The gem is available as open source under the terms of the MIT License.