What is the Least Common Multiple of 87480 and 87485?

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 87480 and 87485 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87480 and 87485, than apply into the LCM equation.

GCF(87480,87485) = 5
LCM(87480,87485) = ( 87480 × 87485) / 5
LCM(87480,87485) = 7653187800 / 5
LCM(87480,87485) = 1530637560

Least Common Multiple (LCM) of 87480 and 87485 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87480 and 87485. First we will calculate the prime factors of 87480 and 87485.

Prime Factorization of 87480

Prime Factorization of 87485

Now multiplying the highest exponent prime factors to calculate the LCM of 87480 and 87485.

LCM(87480,87485) = 2³ × 3⁷ × 5¹ × 17497¹
LCM(87480,87485) = 1530637560