Find the greatest common divisor (GCD) of 84 and 126.
Note
Both 84 and 126 share prime factors 2·3·7; 84=2^2·3·7 and 126=2·3^2·7, so the GCD uses the minimum powers: 2·3·7=42.
Find the greatest common divisor (GCD) of 84 and 126.
Both 84 and 126 share prime factors 2·3·7; 84=2^2·3·7 and 126=2·3^2·7, so the GCD uses the minimum powers: 2·3·7=42.