#10951: ecmfactor should take as optional argument the sigma value
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Reporter: zimmerma | Owner: tbd
Type: enhancement | Status: new
Priority: minor | Milestone: sage-4.7
Component: factorization | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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I suggest the {{{ecmfactor}}} function takes as optional argument a sigma
value, which would be passed to GMP-ECM. In case of a successful
factorization, this would allow to know the lucky curve, for
example to report it on some tables of records.
For example I found a 61-digit prime factor using {{{ecmfactor}}},
but was unable to know the lucky sigma
(http://www.loria.fr/~zimmerma/records/ecmnet.html).
Alternatively, one could store the (random) sigma value chosen by
GMP-ECM if not sigma was given, but that might be more difficult to
implement.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10951>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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