What is the Least Common Multiple of 81764 and 81768?

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 81764 and 81768 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81764 and 81768, than apply into the LCM equation.

GCF(81764,81768) = 4
LCM(81764,81768) = ( 81764 × 81768) / 4
LCM(81764,81768) = 6685678752 / 4
LCM(81764,81768) = 1671419688

Least Common Multiple (LCM) of 81764 and 81768 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81764 and 81768. First we will calculate the prime factors of 81764 and 81768.

Prime Factorization of 81764

Prime Factorization of 81768

Now multiplying the highest exponent prime factors to calculate the LCM of 81764 and 81768.

LCM(81764,81768) = 2³ × 20441¹ × 3¹ × 3407¹
LCM(81764,81768) = 1671419688