What is the Least Common Multiple of 15390 and 15408?

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 15390 and 15408 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15390 and 15408, than apply into the LCM equation.

GCF(15390,15408) = 18
LCM(15390,15408) = ( 15390 × 15408) / 18
LCM(15390,15408) = 237129120 / 18
LCM(15390,15408) = 13173840

Least Common Multiple (LCM) of 15390 and 15408 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15390 and 15408. First we will calculate the prime factors of 15390 and 15408.

Prime Factorization of 15390

Prime Factorization of 15408

Now multiplying the highest exponent prime factors to calculate the LCM of 15390 and 15408.

LCM(15390,15408) = 2⁴ × 3⁴ × 5¹ × 19¹ × 107¹
LCM(15390,15408) = 13173840