What is the Least Common Multiple of 72128 and 72135?

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 72128 and 72135 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72128 and 72135, than apply into the LCM equation.

GCF(72128,72135) = 7
LCM(72128,72135) = ( 72128 × 72135) / 7
LCM(72128,72135) = 5202953280 / 7
LCM(72128,72135) = 743279040

Least Common Multiple (LCM) of 72128 and 72135 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72128 and 72135. First we will calculate the prime factors of 72128 and 72135.

Prime Factorization of 72128

Prime Factorization of 72135

Now multiplying the highest exponent prime factors to calculate the LCM of 72128 and 72135.

LCM(72128,72135) = 2⁶ × 7² × 23¹ × 3² × 5¹ × 229¹
LCM(72128,72135) = 743279040