What is the Least Common Multiple of 11209 and 11220?

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 11209 and 11220 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11209 and 11220, than apply into the LCM equation.

GCF(11209,11220) = 11
LCM(11209,11220) = ( 11209 × 11220) / 11
LCM(11209,11220) = 125764980 / 11
LCM(11209,11220) = 11433180

Least Common Multiple (LCM) of 11209 and 11220 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11209 and 11220. First we will calculate the prime factors of 11209 and 11220.

Prime Factorization of 11209

Prime Factorization of 11220

Now multiplying the highest exponent prime factors to calculate the LCM of 11209 and 11220.

LCM(11209,11220) = 11¹ × 1019¹ × 2² × 3¹ × 5¹ × 17¹
LCM(11209,11220) = 11433180