What is the Least Common Multiple of 16209 and 16221?

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 16209 and 16221 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16209 and 16221, than apply into the LCM equation.

GCF(16209,16221) = 3
LCM(16209,16221) = ( 16209 × 16221) / 3
LCM(16209,16221) = 262926189 / 3
LCM(16209,16221) = 87642063

Least Common Multiple (LCM) of 16209 and 16221 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16209 and 16221. First we will calculate the prime factors of 16209 and 16221.

Prime Factorization of 16209

Prime Factorization of 16221

Now multiplying the highest exponent prime factors to calculate the LCM of 16209 and 16221.

LCM(16209,16221) = 3² × 1801¹ × 5407¹
LCM(16209,16221) = 87642063