What is the Least Common Multiple of 2100 and 2108?

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 2100 and 2108 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2100 and 2108, than apply into the LCM equation.

GCF(2100,2108) = 4
LCM(2100,2108) = ( 2100 × 2108) / 4
LCM(2100,2108) = 4426800 / 4
LCM(2100,2108) = 1106700

Least Common Multiple (LCM) of 2100 and 2108 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2100 and 2108. First we will calculate the prime factors of 2100 and 2108.

Prime Factorization of 2100

Prime Factorization of 2108

Now multiplying the highest exponent prime factors to calculate the LCM of 2100 and 2108.

LCM(2100,2108) = 2² × 3¹ × 5² × 7¹ × 17¹ × 31¹
LCM(2100,2108) = 1106700