What is the Least Common Multiple of 18672 and 18688?

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 18672 and 18688 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18672 and 18688, than apply into the LCM equation.

GCF(18672,18688) = 16
LCM(18672,18688) = ( 18672 × 18688) / 16
LCM(18672,18688) = 348942336 / 16
LCM(18672,18688) = 21808896

Least Common Multiple (LCM) of 18672 and 18688 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18672 and 18688. First we will calculate the prime factors of 18672 and 18688.

Prime Factorization of 18672

Prime Factorization of 18688

Now multiplying the highest exponent prime factors to calculate the LCM of 18672 and 18688.

LCM(18672,18688) = 2⁸ × 3¹ × 389¹ × 73¹
LCM(18672,18688) = 21808896