What is the Least Common Multiple of 12225 and 12240?

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 12225 and 12240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12225 and 12240, than apply into the LCM equation.

GCF(12225,12240) = 15
LCM(12225,12240) = ( 12225 × 12240) / 15
LCM(12225,12240) = 149634000 / 15
LCM(12225,12240) = 9975600

Least Common Multiple (LCM) of 12225 and 12240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12225 and 12240. First we will calculate the prime factors of 12225 and 12240.

Prime Factorization of 12225

Prime Factorization of 12240

Now multiplying the highest exponent prime factors to calculate the LCM of 12225 and 12240.

LCM(12225,12240) = 3² × 5² × 163¹ × 2⁴ × 17¹
LCM(12225,12240) = 9975600