What is the Least Common Multiple of 40680 and 40685?

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 40680 and 40685 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40680 and 40685, than apply into the LCM equation.

GCF(40680,40685) = 5
LCM(40680,40685) = ( 40680 × 40685) / 5
LCM(40680,40685) = 1655065800 / 5
LCM(40680,40685) = 331013160

Least Common Multiple (LCM) of 40680 and 40685 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40680 and 40685. First we will calculate the prime factors of 40680 and 40685.

Prime Factorization of 40680

Prime Factorization of 40685

Now multiplying the highest exponent prime factors to calculate the LCM of 40680 and 40685.

LCM(40680,40685) = 2³ × 3² × 5¹ × 113¹ × 79¹ × 103¹
LCM(40680,40685) = 331013160