What is the Least Common Multiple of 17840 and 17856?

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 17840 and 17856 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17840 and 17856, than apply into the LCM equation.

GCF(17840,17856) = 16
LCM(17840,17856) = ( 17840 × 17856) / 16
LCM(17840,17856) = 318551040 / 16
LCM(17840,17856) = 19909440

Least Common Multiple (LCM) of 17840 and 17856 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17840 and 17856. First we will calculate the prime factors of 17840 and 17856.

Prime Factorization of 17840

Prime Factorization of 17856

Now multiplying the highest exponent prime factors to calculate the LCM of 17840 and 17856.

LCM(17840,17856) = 2⁶ × 5¹ × 223¹ × 3² × 31¹
LCM(17840,17856) = 19909440