project-euler.206: reduce memory usage
project-euler.206: reduce memory usage
littledan/Factor,littledan/Factor,cataska/factor,ceninan/factor,cataska/factor,erg/factor,cataska/factor,mcandre/factor,erg/factor,erg/factor,littledan/Factor,littledan/Factor,cataska/factor,mcandre/factor,kingcons/factor,mcandre/factor,ceninan/factor,mcandre/factor,erg/factor,erg/factor,erg/factor,kingcons/factor,mcandre/factor,kingcons/factor,ceninan/factor,ceninan/factor,mcandre/factor,mcandre/factor,kingcons/factor,erg/factor