What is the Least Common Multiple of 43215 and 43220?

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 43215 and 43220 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 43215 and 43220, than apply into the LCM equation.

GCF(43215,43220) = 5
LCM(43215,43220) = ( 43215 × 43220) / 5
LCM(43215,43220) = 1867752300 / 5
LCM(43215,43220) = 373550460

Least Common Multiple (LCM) of 43215 and 43220 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 43215 and 43220. First we will calculate the prime factors of 43215 and 43220.

Prime Factorization of 43215

Prime Factorization of 43220

Now multiplying the highest exponent prime factors to calculate the LCM of 43215 and 43220.

LCM(43215,43220) = 3¹ × 5¹ × 43¹ × 67¹ × 2² × 2161¹
LCM(43215,43220) = 373550460