What is the Least Common Multiple of 48405 and 48420?

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 48405 and 48420 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 48405 and 48420, than apply into the LCM equation.

GCF(48405,48420) = 15
LCM(48405,48420) = ( 48405 × 48420) / 15
LCM(48405,48420) = 2343770100 / 15
LCM(48405,48420) = 156251340

Least Common Multiple (LCM) of 48405 and 48420 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 48405 and 48420. First we will calculate the prime factors of 48405 and 48420.

Prime Factorization of 48405

Prime Factorization of 48420

Now multiplying the highest exponent prime factors to calculate the LCM of 48405 and 48420.

LCM(48405,48420) = 3² × 5¹ × 7¹ × 461¹ × 2² × 269¹
LCM(48405,48420) = 156251340