What is the Least Common Multiple of 87421 and 87428?

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 87421 and 87428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87421 and 87428, than apply into the LCM equation.

GCF(87421,87428) = 1
LCM(87421,87428) = ( 87421 × 87428) / 1
LCM(87421,87428) = 7643043188 / 1
LCM(87421,87428) = 7643043188

Least Common Multiple (LCM) of 87421 and 87428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87421 and 87428. First we will calculate the prime factors of 87421 and 87428.

Prime Factorization of 87421

Prime Factorization of 87428

Now multiplying the highest exponent prime factors to calculate the LCM of 87421 and 87428.

LCM(87421,87428) = 87421¹ × 2² × 11¹ × 1987¹
LCM(87421,87428) = 7643043188