What is the Least Common Multiple of 20489 and 20508?

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 20489 and 20508 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20489 and 20508, than apply into the LCM equation.

GCF(20489,20508) = 1
LCM(20489,20508) = ( 20489 × 20508) / 1
LCM(20489,20508) = 420188412 / 1
LCM(20489,20508) = 420188412

Least Common Multiple (LCM) of 20489 and 20508 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20489 and 20508. First we will calculate the prime factors of 20489 and 20508.

Prime Factorization of 20489

Prime Factorization of 20508

Now multiplying the highest exponent prime factors to calculate the LCM of 20489 and 20508.

LCM(20489,20508) = 7¹ × 2927¹ × 2² × 3¹ × 1709¹
LCM(20489,20508) = 420188412