What is the Least Common Multiple of 75840 and 75858?

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 75840 and 75858 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 75840 and 75858, than apply into the LCM equation.

GCF(75840,75858) = 6
LCM(75840,75858) = ( 75840 × 75858) / 6
LCM(75840,75858) = 5753070720 / 6
LCM(75840,75858) = 958845120

Least Common Multiple (LCM) of 75840 and 75858 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 75840 and 75858. First we will calculate the prime factors of 75840 and 75858.

Prime Factorization of 75840

Prime Factorization of 75858

Now multiplying the highest exponent prime factors to calculate the LCM of 75840 and 75858.

LCM(75840,75858) = 2⁶ × 3¹ × 5¹ × 79¹ × 47¹ × 269¹
LCM(75840,75858) = 958845120