What is the Least Common Multiple of 20858 and 20868?

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 20858 and 20868 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20858 and 20868, than apply into the LCM equation.

GCF(20858,20868) = 2
LCM(20858,20868) = ( 20858 × 20868) / 2
LCM(20858,20868) = 435264744 / 2
LCM(20858,20868) = 217632372

Least Common Multiple (LCM) of 20858 and 20868 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20858 and 20868. First we will calculate the prime factors of 20858 and 20868.

Prime Factorization of 20858

Prime Factorization of 20868

Now multiplying the highest exponent prime factors to calculate the LCM of 20858 and 20868.

LCM(20858,20868) = 2² × 10429¹ × 3¹ × 37¹ × 47¹
LCM(20858,20868) = 217632372