What is the Least Common Multiple of 18315 and 18320?

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 18315 and 18320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18315 and 18320, than apply into the LCM equation.

GCF(18315,18320) = 5
LCM(18315,18320) = ( 18315 × 18320) / 5
LCM(18315,18320) = 335530800 / 5
LCM(18315,18320) = 67106160

Least Common Multiple (LCM) of 18315 and 18320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18315 and 18320. First we will calculate the prime factors of 18315 and 18320.

Prime Factorization of 18315

Prime Factorization of 18320

Now multiplying the highest exponent prime factors to calculate the LCM of 18315 and 18320.

LCM(18315,18320) = 3² × 5¹ × 11¹ × 37¹ × 2⁴ × 229¹
LCM(18315,18320) = 67106160