Issue #4831 has been updated by yugui (Yuki Sonoda).


I am not against adding such an alias but I'd like to think with more inputs. At this moment, I don't have strong reason to justify the name.

From a certain perspective, the alias is simply wrong because the method returns not only prime factors of the receiver but also their multiplicities -- i.e. the prime division of the receiver.
For me, `200.prime_factors` sometimes looks to return (or yield) `[2, 2, 2, 5, 5]` as MATLAB does.

Mame, do you have any concrete examples which support your expectation to the return value?  Or any suggestions from native English speakers or mathematicians?

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Feature #4831: Integer#prime_factors
https://bugs.ruby-lang.org/issues/4831#change-69684

* Author: mame (Yusuke Endoh)
* Status: Assigned
* Priority: Normal
* Assignee: yugui (Yuki Sonoda)
* Target version: 
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Hello,

lib/prime provides Integer#prime_division, but I always forget the name.
I think that #prime_factors is more suitable.  I'd like to hear opinions
of English natives.  What do you think?

-- 
Yusuke Endoh <mame / tsg.ne.jp>



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