What is the Least Common Multiple of 81728 and 81732?

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 81728 and 81732 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81728 and 81732, than apply into the LCM equation.

GCF(81728,81732) = 4
LCM(81728,81732) = ( 81728 × 81732) / 4
LCM(81728,81732) = 6679792896 / 4
LCM(81728,81732) = 1669948224

Least Common Multiple (LCM) of 81728 and 81732 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81728 and 81732. First we will calculate the prime factors of 81728 and 81732.

Prime Factorization of 81728

Prime Factorization of 81732

Now multiplying the highest exponent prime factors to calculate the LCM of 81728 and 81732.

LCM(81728,81732) = 2⁶ × 1277¹ × 3¹ × 7² × 139¹
LCM(81728,81732) = 1669948224