bionic (1) pyecm.1.gz

Provided by: pyecm_2.0.2-3_all bug

NAME

       pyecm - Number factorization with the Elliptic Curve Method

SYNOPSIS

       pyecm [OPTIONS] [FACTORS]...

DESCRIPTION

       pyecm factors numbers using the Elliptic Curve Method (ECM). If FACTORS is given, it will factor each one
       of these. Otherwise, it will factor from standard input. You can type "exit" to quit pyecm at any time.

       -h, --help
              Get help using pyecm.

       --portion=num
              Does only part of the work for factoring, corresponding to what fraction of  the  total  work  the
              machine  is doing. Useful for working in parallel. For example, if there are three machines: 1GHz,
              1GHz, and 2GHz, print should be set to 0.25 for the 1GHz machines and 0.5 for  the  2GHz  machine.
              Implies -r and -v. -r is needed to avoid duplicating work and -v is needed to report results.

       --ov=num
              Sets  the  value  of  the internal parameter ov, which determines the trade-off between memory and
              time usage. Do not touch if you do not know what you are doing. Please read all the  documentation
              and understand the full implications of the parameter before using this switch.

       -n, --noverbose
              Terse.  On by default. Needed to cancel the -v from the --portion or --random switches. If both -n
              and -v are specified, the one specified last takes precedence.

       -r, --random
              Chooses random values for sigma, an internal parameter in the calculation.  Implies -v; if  you're
              doing something random, you want to know what's happening.

       -v, --verbose
              Explains what is being done with intermediate calculations and results.

EXAMPLES

       pyecm 2^3-1 1000 "(3^13+2)*5"
              Factor 7, 1000, then 7971625.

       pyecm  Get factors from standard input.

AUTHOR

       Written by Eric Larson and Martin Kelly.

REPORTING BUGS

       Please send bugs to Eric Larson <elarson3@uoregon.edu>.

                                                   pyecm 2.0.2                                          PYECM(1)