What is the Least Common Multiple of 12020 and 12040?

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 12020 and 12040 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12020 and 12040, than apply into the LCM equation.

GCF(12020,12040) = 20
LCM(12020,12040) = ( 12020 × 12040) / 20
LCM(12020,12040) = 144720800 / 20
LCM(12020,12040) = 7236040

Least Common Multiple (LCM) of 12020 and 12040 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12020 and 12040. First we will calculate the prime factors of 12020 and 12040.

Prime Factorization of 12020

Prime Factorization of 12040

Now multiplying the highest exponent prime factors to calculate the LCM of 12020 and 12040.

LCM(12020,12040) = 2³ × 5¹ × 601¹ × 7¹ × 43¹
LCM(12020,12040) = 7236040