What is the Least Common Multiple of 6720 and 6724?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 6720 and 6724 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6720 and 6724, than apply into the LCM equation.

GCF(6720,6724) = 4
LCM(6720,6724) = ( 6720 × 6724) / 4
LCM(6720,6724) = 45185280 / 4
LCM(6720,6724) = 11296320

Least Common Multiple (LCM) of 6720 and 6724 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6720 and 6724. First we will calculate the prime factors of 6720 and 6724.

Prime Factorization of 6720

Prime Factorization of 6724

Now multiplying the highest exponent prime factors to calculate the LCM of 6720 and 6724.

LCM(6720,6724) = 2⁶ × 3¹ × 5¹ × 7¹ × 41²
LCM(6720,6724) = 11296320