What is the Least Common Multiple of 18015 and 18021?

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 18015 and 18021 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18015 and 18021, than apply into the LCM equation.

GCF(18015,18021) = 3
LCM(18015,18021) = ( 18015 × 18021) / 3
LCM(18015,18021) = 324648315 / 3
LCM(18015,18021) = 108216105

Least Common Multiple (LCM) of 18015 and 18021 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18015 and 18021. First we will calculate the prime factors of 18015 and 18021.

Prime Factorization of 18015

Prime Factorization of 18021

Now multiplying the highest exponent prime factors to calculate the LCM of 18015 and 18021.

LCM(18015,18021) = 3¹ × 5¹ × 1201¹ × 6007¹
LCM(18015,18021) = 108216105