What is the Least Common Multiple of 13458 and 13478?

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 13458 and 13478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13458 and 13478, than apply into the LCM equation.

GCF(13458,13478) = 2
LCM(13458,13478) = ( 13458 × 13478) / 2
LCM(13458,13478) = 181386924 / 2
LCM(13458,13478) = 90693462

Least Common Multiple (LCM) of 13458 and 13478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13458 and 13478. First we will calculate the prime factors of 13458 and 13478.

Prime Factorization of 13458

Prime Factorization of 13478

Now multiplying the highest exponent prime factors to calculate the LCM of 13458 and 13478.

LCM(13458,13478) = 2¹ × 3¹ × 2243¹ × 23¹ × 293¹
LCM(13458,13478) = 90693462