Find the greatest common factor (GCF) of 48 and 180.
Note
Prime factorize: 48 = 2^4 × 3, 180 = 2^2 × 3^2 × 5; common lowest powers are 2^2 × 3 = 4 × 3 = 12, so GCF = 12.
Find the greatest common factor (GCF) of 48 and 180.
Prime factorize: 48 = 2^4 × 3, 180 = 2^2 × 3^2 × 5; common lowest powers are 2^2 × 3 = 4 × 3 = 12, so GCF = 12.