What is the Least Common Multiple of 67120 and 67140?

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 67120 and 67140 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67120 and 67140, than apply into the LCM equation.

GCF(67120,67140) = 20
LCM(67120,67140) = ( 67120 × 67140) / 20
LCM(67120,67140) = 4506436800 / 20
LCM(67120,67140) = 225321840

Least Common Multiple (LCM) of 67120 and 67140 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67120 and 67140. First we will calculate the prime factors of 67120 and 67140.

Prime Factorization of 67120

Prime Factorization of 67140

Now multiplying the highest exponent prime factors to calculate the LCM of 67120 and 67140.

LCM(67120,67140) = 2⁴ × 5¹ × 839¹ × 3² × 373¹
LCM(67120,67140) = 225321840