common factors of 100 and 140??
The GreatestCommonFactor is 20.........
205 20 = 1007 20 = 1401010 10 = 10010 14 = 14055 20 = 1005 28 = 14044 25 = 1004 35 = 14022 50 = 1002 70 = 14011 100 = 1001 140 = 140