math.primes: little bit more cleanup.
math.primes: little bit more cleanup.

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