What is the Least Common Multiple of 40840 and 40856?

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 40840 and 40856 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40840 and 40856, than apply into the LCM equation.

GCF(40840,40856) = 8
LCM(40840,40856) = ( 40840 × 40856) / 8
LCM(40840,40856) = 1668559040 / 8
LCM(40840,40856) = 208569880

Least Common Multiple (LCM) of 40840 and 40856 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40840 and 40856. First we will calculate the prime factors of 40840 and 40856.

Prime Factorization of 40840

Prime Factorization of 40856

Now multiplying the highest exponent prime factors to calculate the LCM of 40840 and 40856.

LCM(40840,40856) = 2³ × 5¹ × 1021¹ × 5107¹
LCM(40840,40856) = 208569880