What is the Least Common Multiple of 28724 and 28742?

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 28724 and 28742 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28724 and 28742, than apply into the LCM equation.

GCF(28724,28742) = 2
LCM(28724,28742) = ( 28724 × 28742) / 2
LCM(28724,28742) = 825585208 / 2
LCM(28724,28742) = 412792604

Least Common Multiple (LCM) of 28724 and 28742 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28724 and 28742. First we will calculate the prime factors of 28724 and 28742.

Prime Factorization of 28724

Prime Factorization of 28742

Now multiplying the highest exponent prime factors to calculate the LCM of 28724 and 28742.

LCM(28724,28742) = 2² × 43¹ × 167¹ × 7¹ × 2053¹
LCM(28724,28742) = 412792604