What is the Least Common Multiple of 87660 and 87678?

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 87660 and 87678 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87660 and 87678, than apply into the LCM equation.

GCF(87660,87678) = 18
LCM(87660,87678) = ( 87660 × 87678) / 18
LCM(87660,87678) = 7685853480 / 18
LCM(87660,87678) = 426991860

Least Common Multiple (LCM) of 87660 and 87678 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87660 and 87678. First we will calculate the prime factors of 87660 and 87678.

Prime Factorization of 87660

Prime Factorization of 87678

Now multiplying the highest exponent prime factors to calculate the LCM of 87660 and 87678.

LCM(87660,87678) = 2² × 3² × 5¹ × 487¹ × 4871¹
LCM(87660,87678) = 426991860