math.factorials: include 1.
math.factorials: include 1.

bpollack/factor,slavapestov/factor,nicolas-p/factor,slavapestov/factor,dch/factor,slavapestov/factor,sarvex/factor-lang,factor/factor,AlexIljin/factor,bpollack/factor,slavapestov/factor,bpollack/factor,slavapestov/factor,slavapestov/factor,nicolas-p/factor,dch/factor,AlexIljin/factor,bjourne/factor,dch/factor,AlexIljin/factor,sarvex/factor-lang,bpollack/factor,sarvex/factor-lang,AlexIljin/factor,mrjbq7/factor,bjourne/factor,AlexIljin/factor,factor/factor,bjourne/factor,bjourne/factor,mrjbq7/factor,slavapestov/factor,sarvex/factor-lang,tgunr/factor,bjourne/factor,tgunr/factor,tgunr/factor,bjourne/factor,dch/factor,bpollack/factor,mrjbq7/factor,mrjbq7/factor,bpollack/factor,tgunr/factor,nicolas-p/factor,bjourne/factor,AlexIljin/factor,factor/factor,nicolas-p/factor,nicolas-p/factor,tgunr/factor,tgunr/factor,mrjbq7/factor,bpollack/factor,sarvex/factor-lang,dch/factor,factor/factor,dch/factor,nicolas-p/factor,sarvex/factor-lang,factor/factor,mrjbq7/factor,AlexIljin/factor,nicolas-p/factor,sarvex/factor-lang,factor/factor