Practice problem
What are the common factors of 121212 and 151515?
1,31, 31,3
1,2,3,4,5,6,12,151, 2, 3, 4, 5, 6, 12, 151,2,3,4,5,6,12,15
1,3,121, 3, 121,3,12
333
Type a concept, like “slope” or “photosynthesis”.