What is the Least Common Multiple of 7872 and 7881?

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 7872 and 7881 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7872 and 7881, than apply into the LCM equation.

GCF(7872,7881) = 3
LCM(7872,7881) = ( 7872 × 7881) / 3
LCM(7872,7881) = 62039232 / 3
LCM(7872,7881) = 20679744

Least Common Multiple (LCM) of 7872 and 7881 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7872 and 7881. First we will calculate the prime factors of 7872 and 7881.

Prime Factorization of 7872

Prime Factorization of 7881

Now multiplying the highest exponent prime factors to calculate the LCM of 7872 and 7881.

LCM(7872,7881) = 2⁶ × 3¹ × 41¹ × 37¹ × 71¹
LCM(7872,7881) = 20679744