What is the Least Common Multiple of 20809 and 20819?

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 20809 and 20819 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20809 and 20819, than apply into the LCM equation.

GCF(20809,20819) = 1
LCM(20809,20819) = ( 20809 × 20819) / 1
LCM(20809,20819) = 433222571 / 1
LCM(20809,20819) = 433222571

Least Common Multiple (LCM) of 20809 and 20819 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20809 and 20819. First we will calculate the prime factors of 20809 and 20819.

Prime Factorization of 20809

Prime Factorization of 20819

Now multiplying the highest exponent prime factors to calculate the LCM of 20809 and 20819.

LCM(20809,20819) = 20809¹ × 109¹ × 191¹
LCM(20809,20819) = 433222571