What is the Least Common Multiple of 21144 and 21162?

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 21144 and 21162 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21144 and 21162, than apply into the LCM equation.

GCF(21144,21162) = 6
LCM(21144,21162) = ( 21144 × 21162) / 6
LCM(21144,21162) = 447449328 / 6
LCM(21144,21162) = 74574888

Least Common Multiple (LCM) of 21144 and 21162 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21144 and 21162. First we will calculate the prime factors of 21144 and 21162.

Prime Factorization of 21144

Prime Factorization of 21162

Now multiplying the highest exponent prime factors to calculate the LCM of 21144 and 21162.

LCM(21144,21162) = 2³ × 3¹ × 881¹ × 3527¹
LCM(21144,21162) = 74574888