What is the Least Common Multiple of 80420 and 80428?

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 80420 and 80428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80420 and 80428, than apply into the LCM equation.

GCF(80420,80428) = 4
LCM(80420,80428) = ( 80420 × 80428) / 4
LCM(80420,80428) = 6468019760 / 4
LCM(80420,80428) = 1617004940

Least Common Multiple (LCM) of 80420 and 80428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 80420 and 80428. First we will calculate the prime factors of 80420 and 80428.

Prime Factorization of 80420

Prime Factorization of 80428

Now multiplying the highest exponent prime factors to calculate the LCM of 80420 and 80428.

LCM(80420,80428) = 2² × 5¹ × 4021¹ × 20107¹
LCM(80420,80428) = 1617004940