Practice problem
What are the common factors of 121212 and 181818?
1,3,6,91, 3, 6, 91,3,6,9
1,3,4,61, 3, 4, 61,3,4,6
1,2,3,61, 2, 3, 61,2,3,6
1,2,3,4,6,91, 2, 3, 4, 6, 91,2,3,4,6,9
Type a concept, like “slope” or “photosynthesis”.