What is the Least Common Multiple of 81878 and 81888?

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 81878 and 81888 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81878 and 81888, than apply into the LCM equation.

GCF(81878,81888) = 2
LCM(81878,81888) = ( 81878 × 81888) / 2
LCM(81878,81888) = 6704825664 / 2
LCM(81878,81888) = 3352412832

Least Common Multiple (LCM) of 81878 and 81888 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81878 and 81888. First we will calculate the prime factors of 81878 and 81888.

Prime Factorization of 81878

Prime Factorization of 81888

Now multiplying the highest exponent prime factors to calculate the LCM of 81878 and 81888.

LCM(81878,81888) = 2⁵ × 40939¹ × 3¹ × 853¹
LCM(81878,81888) = 3352412832