What is the Least Common Multiple of 81072 and 81080?

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 81072 and 81080 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81072 and 81080, than apply into the LCM equation.

GCF(81072,81080) = 8
LCM(81072,81080) = ( 81072 × 81080) / 8
LCM(81072,81080) = 6573317760 / 8
LCM(81072,81080) = 821664720

Least Common Multiple (LCM) of 81072 and 81080 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81072 and 81080. First we will calculate the prime factors of 81072 and 81080.

Prime Factorization of 81072

Prime Factorization of 81080

Now multiplying the highest exponent prime factors to calculate the LCM of 81072 and 81080.

LCM(81072,81080) = 2⁴ × 3² × 563¹ × 5¹ × 2027¹
LCM(81072,81080) = 821664720