What is the Least Common Multiple of 72408 and 72428?

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 72408 and 72428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72408 and 72428, than apply into the LCM equation.

GCF(72408,72428) = 4
LCM(72408,72428) = ( 72408 × 72428) / 4
LCM(72408,72428) = 5244366624 / 4
LCM(72408,72428) = 1311091656

Least Common Multiple (LCM) of 72408 and 72428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72408 and 72428. First we will calculate the prime factors of 72408 and 72428.

Prime Factorization of 72408

Prime Factorization of 72428

Now multiplying the highest exponent prime factors to calculate the LCM of 72408 and 72428.

LCM(72408,72428) = 2³ × 3¹ × 7¹ × 431¹ × 19¹ × 953¹
LCM(72408,72428) = 1311091656