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The
prime
gem has been extracted from Ruby core into a gem.Starting with Ruby 3.4.0, it will no longer be bundled with Ruby, so it requires an explicit dependency. Ruby 3.3.0+ display a warning due to this:
I also removed the fallback that uses
mathn
, asmathn
is deprecated and not recommended to use. Theprime
gem supports Ruby 2.5.0+, same as this gem, so it should not break compatibility.