What is the Least Common Multiple of 72400 and 72404?

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 72400 and 72404 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72400 and 72404, than apply into the LCM equation.

GCF(72400,72404) = 4
LCM(72400,72404) = ( 72400 × 72404) / 4
LCM(72400,72404) = 5242049600 / 4
LCM(72400,72404) = 1310512400

Least Common Multiple (LCM) of 72400 and 72404 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72400 and 72404. First we will calculate the prime factors of 72400 and 72404.

Prime Factorization of 72400

Prime Factorization of 72404

Now multiplying the highest exponent prime factors to calculate the LCM of 72400 and 72404.

LCM(72400,72404) = 2⁴ × 5² × 181¹ × 23¹ × 787¹
LCM(72400,72404) = 1310512400