newRPL - build 1255 released! [updated to 1299]

[ijabbott]

Claudio L. Wrote:

The Shadow Wrote:Okay, so FACTORS now makes the first prime factor negative if the original number was negative. I assume this is just a marker, because otherwise it's flat-out wrong. (ie, it says that -180 factors as (-2)^2*3^2*5.)

Ouch, and I thought I had accomplished a lot in the 5 minutes I had available. Of course the negative sign doesn't work with even multiplicity. So I guess having -1 1 at the beginning is the only real solution.

How about { -2 1 2 1 3 2 5 1 }? I.e. extract just one power of the first factor and make it negative. This would only need to be done if there is an even power of the first factor.