What is the Least Common Multiple of 16378 and 16390?

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 16378 and 16390 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16378 and 16390, than apply into the LCM equation.

GCF(16378,16390) = 2
LCM(16378,16390) = ( 16378 × 16390) / 2
LCM(16378,16390) = 268435420 / 2
LCM(16378,16390) = 134217710

Least Common Multiple (LCM) of 16378 and 16390 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16378 and 16390. First we will calculate the prime factors of 16378 and 16390.

Prime Factorization of 16378

Prime Factorization of 16390

Now multiplying the highest exponent prime factors to calculate the LCM of 16378 and 16390.

LCM(16378,16390) = 2¹ × 19¹ × 431¹ × 5¹ × 11¹ × 149¹
LCM(16378,16390) = 134217710