What is the Least Common Multiple of 12005 and 12021?

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 12005 and 12021 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12005 and 12021, than apply into the LCM equation.

GCF(12005,12021) = 1
LCM(12005,12021) = ( 12005 × 12021) / 1
LCM(12005,12021) = 144312105 / 1
LCM(12005,12021) = 144312105

Least Common Multiple (LCM) of 12005 and 12021 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12005 and 12021. First we will calculate the prime factors of 12005 and 12021.

Prime Factorization of 12005

Prime Factorization of 12021

Now multiplying the highest exponent prime factors to calculate the LCM of 12005 and 12021.

LCM(12005,12021) = 5¹ × 7⁴ × 3¹ × 4007¹
LCM(12005,12021) = 144312105