What is the Least Common Multiple of 81854 and 81858?

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 81854 and 81858 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81854 and 81858, than apply into the LCM equation.

GCF(81854,81858) = 2
LCM(81854,81858) = ( 81854 × 81858) / 2
LCM(81854,81858) = 6700404732 / 2
LCM(81854,81858) = 3350202366

Least Common Multiple (LCM) of 81854 and 81858 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81854 and 81858. First we will calculate the prime factors of 81854 and 81858.

Prime Factorization of 81854

Prime Factorization of 81858

Now multiplying the highest exponent prime factors to calculate the LCM of 81854 and 81858.

LCM(81854,81858) = 2¹ × 40927¹ × 3¹ × 7¹ × 1949¹
LCM(81854,81858) = 3350202366