What is the Least Common Multiple of 16911 and 16920?

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 16911 and 16920 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16911 and 16920, than apply into the LCM equation.

GCF(16911,16920) = 9
LCM(16911,16920) = ( 16911 × 16920) / 9
LCM(16911,16920) = 286134120 / 9
LCM(16911,16920) = 31792680

Least Common Multiple (LCM) of 16911 and 16920 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16911 and 16920. First we will calculate the prime factors of 16911 and 16920.

Prime Factorization of 16911

Prime Factorization of 16920

Now multiplying the highest exponent prime factors to calculate the LCM of 16911 and 16920.

LCM(16911,16920) = 3² × 1879¹ × 2³ × 5¹ × 47¹
LCM(16911,16920) = 31792680