What is the Least Common Multiple of 72561 and 72576?

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 72561 and 72576 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72561 and 72576, than apply into the LCM equation.

GCF(72561,72576) = 3
LCM(72561,72576) = ( 72561 × 72576) / 3
LCM(72561,72576) = 5266187136 / 3
LCM(72561,72576) = 1755395712

Least Common Multiple (LCM) of 72561 and 72576 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72561 and 72576. First we will calculate the prime factors of 72561 and 72576.

Prime Factorization of 72561

Prime Factorization of 72576

Now multiplying the highest exponent prime factors to calculate the LCM of 72561 and 72576.

LCM(72561,72576) = 3⁴ × 19² × 67¹ × 2⁷ × 7¹
LCM(72561,72576) = 1755395712