What is the Least Common Multiple of 28558 and 28578?

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 28558 and 28578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28558 and 28578, than apply into the LCM equation.

GCF(28558,28578) = 2
LCM(28558,28578) = ( 28558 × 28578) / 2
LCM(28558,28578) = 816130524 / 2
LCM(28558,28578) = 408065262

Least Common Multiple (LCM) of 28558 and 28578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28558 and 28578. First we will calculate the prime factors of 28558 and 28578.

Prime Factorization of 28558

Prime Factorization of 28578

Now multiplying the highest exponent prime factors to calculate the LCM of 28558 and 28578.

LCM(28558,28578) = 2¹ × 109¹ × 131¹ × 3¹ × 11¹ × 433¹
LCM(28558,28578) = 408065262