What is the Least Common Multiple of 20853 and 20861?

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 20853 and 20861 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20853 and 20861, than apply into the LCM equation.

GCF(20853,20861) = 1
LCM(20853,20861) = ( 20853 × 20861) / 1
LCM(20853,20861) = 435014433 / 1
LCM(20853,20861) = 435014433

Least Common Multiple (LCM) of 20853 and 20861 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20853 and 20861. First we will calculate the prime factors of 20853 and 20861.

Prime Factorization of 20853

Prime Factorization of 20861

Now multiplying the highest exponent prime factors to calculate the LCM of 20853 and 20861.

LCM(20853,20861) = 3² × 7¹ × 331¹ × 23¹ × 907¹
LCM(20853,20861) = 435014433