What is the Least Common Multiple of 78900 and 78912?

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 78900 and 78912 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78900 and 78912, than apply into the LCM equation.

GCF(78900,78912) = 12
LCM(78900,78912) = ( 78900 × 78912) / 12
LCM(78900,78912) = 6226156800 / 12
LCM(78900,78912) = 518846400

Least Common Multiple (LCM) of 78900 and 78912 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78900 and 78912. First we will calculate the prime factors of 78900 and 78912.

Prime Factorization of 78900

Prime Factorization of 78912

Now multiplying the highest exponent prime factors to calculate the LCM of 78900 and 78912.

LCM(78900,78912) = 2⁶ × 3² × 5² × 263¹ × 137¹
LCM(78900,78912) = 518846400