What is the Least Common Multiple of 72440 and 72456?

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 72440 and 72456 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72440 and 72456, than apply into the LCM equation.

GCF(72440,72456) = 8
LCM(72440,72456) = ( 72440 × 72456) / 8
LCM(72440,72456) = 5248712640 / 8
LCM(72440,72456) = 656089080

Least Common Multiple (LCM) of 72440 and 72456 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72440 and 72456. First we will calculate the prime factors of 72440 and 72456.

Prime Factorization of 72440

Prime Factorization of 72456

Now multiplying the highest exponent prime factors to calculate the LCM of 72440 and 72456.

LCM(72440,72456) = 2³ × 5¹ × 1811¹ × 3¹ × 3019¹
LCM(72440,72456) = 656089080