What is the Least Common Multiple of 72680 and 72690?

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 72680 and 72690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72680 and 72690, than apply into the LCM equation.

GCF(72680,72690) = 10
LCM(72680,72690) = ( 72680 × 72690) / 10
LCM(72680,72690) = 5283109200 / 10
LCM(72680,72690) = 528310920

Least Common Multiple (LCM) of 72680 and 72690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72680 and 72690. First we will calculate the prime factors of 72680 and 72690.

Prime Factorization of 72680

Prime Factorization of 72690

Now multiplying the highest exponent prime factors to calculate the LCM of 72680 and 72690.

LCM(72680,72690) = 2³ × 5¹ × 23¹ × 79¹ × 3¹ × 2423¹
LCM(72680,72690) = 528310920