What is the Least Common Multiple of 20811 and 20817?

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 20817 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 20817, than apply into the LCM equation.

GCF(20811,20817) = 3
LCM(20811,20817) = ( 20811 × 20817) / 3
LCM(20811,20817) = 433222587 / 3
LCM(20811,20817) = 144407529

Least Common Multiple (LCM) of 20811 and 20817 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20811 and 20817. First we will calculate the prime factors of 20811 and 20817.

Prime Factorization of 20811

Prime Factorization of 20817

Now multiplying the highest exponent prime factors to calculate the LCM of 20811 and 20817.

LCM(20811,20817) = 3⁴ × 7¹ × 991¹ × 257¹
LCM(20811,20817) = 144407529