What is the Least Common Multiple of 72638 and 72648?

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 72638 and 72648 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72638 and 72648, than apply into the LCM equation.

GCF(72638,72648) = 2
LCM(72638,72648) = ( 72638 × 72648) / 2
LCM(72638,72648) = 5277005424 / 2
LCM(72638,72648) = 2638502712

Least Common Multiple (LCM) of 72638 and 72648 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72638 and 72648. First we will calculate the prime factors of 72638 and 72648.

Prime Factorization of 72638

Prime Factorization of 72648

Now multiplying the highest exponent prime factors to calculate the LCM of 72638 and 72648.

LCM(72638,72648) = 2³ × 36319¹ × 3² × 1009¹
LCM(72638,72648) = 2638502712