Fix bug in project-euler.169 introduced by a former checkin
Fix bug in project-euler.169 introduced by a former checkin

slavapestov/factor,dharmatech/factor,jwmerrill/factor,slavapestov/factor,littledan/Factor,tgunr/factor,nicolas-p/factor,jwmerrill/factor,ceninan/factor,Keyholder/factor,bpollack/factor,mrjbq7/factor,littledan/Factor,mrjbq7/factor,ceninan/factor,bpollack/factor,seckar/factor,tgunr/factor,cataska/factor,sarvex/factor-lang,bjourne/factor,erg/factor,tgunr/factor,bjourne/factor,mcandre/factor,tgunr/factor,nicolas-p/factor,bjourne/factor,mecon/factor,sarvex/factor-lang,mecon/factor,bpollack/factor,AlexIljin/factor,nicolas-p/factor,AlexIljin/factor,sarvex/factor-lang,tgunr/factor,slavapestov/factor,factor/factor,seckar/factor,erg/factor,slavapestov/factor,bjourne/factor,slavapestov/factor,slavapestov/factor,mrjbq7/factor,erg/factor,dharmatech/factor,dharmatech/factor,littledan/Factor,ehird/factor,kingcons/factor,AlexIljin/factor,factor/factor,dch/factor,nicolas-p/factor,sarvex/factor-lang,nicolas-p/factor,nicolas-p/factor,ehird/factor,dch/factor,cataska/factor,factor/factor,kingcons/factor,erg/factor,bjourne/factor,mcandre/factor,dch/factor,bpollack/factor,ceninan/factor,dch/factor,tgunr/factor,factor/factor,AlexIljin/factor,littledan/Factor,mcandre/factor,nicolas-p/factor,mecon/factor,bpollack/factor,AlexIljin/factor,mcandre/factor,dch/factor,AlexIljin/factor,erg/factor,erg/factor,seckar/factor,cataska/factor,mecon/factor,mcandre/factor,kingcons/factor,Keyholder/factor,sarvex/factor-lang,ehird/factor,sarvex/factor-lang,mcandre/factor,slavapestov/factor,mecon/factor,sarvex/factor-lang,factor/factor,dch/factor,mcandre/factor,mecon/factor,mrjbq7/factor,kingcons/factor,bjourne/factor,AlexIljin/factor,bpollack/factor,jwmerrill/factor,mrjbq7/factor,mrjbq7/factor,ceninan/factor,Keyholder/factor,factor/factor,mecon/factor,bjourne/factor,cataska/factor,bpollack/factor,erg/factor