What is the Least Common Multiple of 20665 and 20675?

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 20665 and 20675 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20665 and 20675, than apply into the LCM equation.

GCF(20665,20675) = 5
LCM(20665,20675) = ( 20665 × 20675) / 5
LCM(20665,20675) = 427248875 / 5
LCM(20665,20675) = 85449775

Least Common Multiple (LCM) of 20665 and 20675 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20665 and 20675. First we will calculate the prime factors of 20665 and 20675.

Prime Factorization of 20665

Prime Factorization of 20675

Now multiplying the highest exponent prime factors to calculate the LCM of 20665 and 20675.

LCM(20665,20675) = 5² × 4133¹ × 827¹
LCM(20665,20675) = 85449775