What is the Least Common Multiple of 15900 and 15912?

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 15900 and 15912 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15900 and 15912, than apply into the LCM equation.

GCF(15900,15912) = 12
LCM(15900,15912) = ( 15900 × 15912) / 12
LCM(15900,15912) = 253000800 / 12
LCM(15900,15912) = 21083400

Least Common Multiple (LCM) of 15900 and 15912 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15900 and 15912. First we will calculate the prime factors of 15900 and 15912.

Prime Factorization of 15900

Prime Factorization of 15912

Now multiplying the highest exponent prime factors to calculate the LCM of 15900 and 15912.

LCM(15900,15912) = 2³ × 3² × 5² × 53¹ × 13¹ × 17¹
LCM(15900,15912) = 21083400