What is the Least Common Multiple of 75600 and 75620?

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 75600 and 75620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 75600 and 75620, than apply into the LCM equation.

GCF(75600,75620) = 20
LCM(75600,75620) = ( 75600 × 75620) / 20
LCM(75600,75620) = 5716872000 / 20
LCM(75600,75620) = 285843600

Least Common Multiple (LCM) of 75600 and 75620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 75600 and 75620. First we will calculate the prime factors of 75600 and 75620.

Prime Factorization of 75600

Prime Factorization of 75620

Now multiplying the highest exponent prime factors to calculate the LCM of 75600 and 75620.

LCM(75600,75620) = 2⁴ × 3³ × 5² × 7¹ × 19¹ × 199¹
LCM(75600,75620) = 285843600