What is the Least Common Multiple of 13704 and 13720?

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 13704 and 13720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13704 and 13720, than apply into the LCM equation.

GCF(13704,13720) = 8
LCM(13704,13720) = ( 13704 × 13720) / 8
LCM(13704,13720) = 188018880 / 8
LCM(13704,13720) = 23502360

Least Common Multiple (LCM) of 13704 and 13720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13704 and 13720. First we will calculate the prime factors of 13704 and 13720.

Prime Factorization of 13704

Prime Factorization of 13720

Now multiplying the highest exponent prime factors to calculate the LCM of 13704 and 13720.

LCM(13704,13720) = 2³ × 3¹ × 571¹ × 5¹ × 7³
LCM(13704,13720) = 23502360