What is the Least Common Multiple of 20811 and 20818?

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 20811 and 20818 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20811 and 20818, than apply into the LCM equation.

GCF(20811,20818) = 7
LCM(20811,20818) = ( 20811 × 20818) / 7
LCM(20811,20818) = 433243398 / 7
LCM(20811,20818) = 61891914

Least Common Multiple (LCM) of 20811 and 20818 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20811 and 20818. First we will calculate the prime factors of 20811 and 20818.

Prime Factorization of 20811

Prime Factorization of 20818

Now multiplying the highest exponent prime factors to calculate the LCM of 20811 and 20818.

LCM(20811,20818) = 3¹ × 7¹ × 991¹ × 2¹ × 1487¹
LCM(20811,20818) = 61891914