What is the Least Common Multiple of 90915 and 90920?

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 90915 and 90920 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90915 and 90920, than apply into the LCM equation.

GCF(90915,90920) = 5
LCM(90915,90920) = ( 90915 × 90920) / 5
LCM(90915,90920) = 8265991800 / 5
LCM(90915,90920) = 1653198360

Least Common Multiple (LCM) of 90915 and 90920 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90915 and 90920. First we will calculate the prime factors of 90915 and 90920.

Prime Factorization of 90915

Prime Factorization of 90920

Now multiplying the highest exponent prime factors to calculate the LCM of 90915 and 90920.

LCM(90915,90920) = 3¹ × 5¹ × 11¹ × 19¹ × 29¹ × 2³ × 2273¹
LCM(90915,90920) = 1653198360