up
	modified:   Makefile
	modified:   db.h
	new file:   fact.c
	new file:   fact.h
	new file:   gcd.c
	new file:   gcd.h
	modified:   main.c
	modified:   sieve.h
	new file:   tests.c
	new file:   tests.h
up
	new file:   prime.h