#9537: trial_division in Sage is really slow
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Reporter: was | Owner: AlexGhitza
Type: enhancement | Status: new
Priority: minor | Milestone: sage-4.5.1
Component: basic arithmetic | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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See my talk:
*
http://wiki.sagemath.org/days24/schedule?action=AttachFile&do=view&target
=stein-cython.pdf
* http://sagenb.org/home/pub/2256/
Basically, this sucks:
{{{
sage: n = 20110000038209
sage: timeit('trial_division(n)')
125 loops, best of 3: 2.75 ms per loop
}}}
Even in pure python one can easily implement this so it runs in about
650microseconds. In C, it takes only 6 microseconds!
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9537>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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