What is the Least Common Multiple of 81670 and 81678?

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 81670 and 81678 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81670 and 81678, than apply into the LCM equation.

GCF(81670,81678) = 2
LCM(81670,81678) = ( 81670 × 81678) / 2
LCM(81670,81678) = 6670642260 / 2
LCM(81670,81678) = 3335321130

Least Common Multiple (LCM) of 81670 and 81678 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81670 and 81678. First we will calculate the prime factors of 81670 and 81678.

Prime Factorization of 81670

Prime Factorization of 81678

Now multiplying the highest exponent prime factors to calculate the LCM of 81670 and 81678.

LCM(81670,81678) = 2¹ × 5¹ × 8167¹ × 3¹ × 13613¹
LCM(81670,81678) = 3335321130