What is the Least Common Multiple of 28218 and 28238?

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 28218 and 28238 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28218 and 28238, than apply into the LCM equation.

GCF(28218,28238) = 2
LCM(28218,28238) = ( 28218 × 28238) / 2
LCM(28218,28238) = 796819884 / 2
LCM(28218,28238) = 398409942

Least Common Multiple (LCM) of 28218 and 28238 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28218 and 28238. First we will calculate the prime factors of 28218 and 28238.

Prime Factorization of 28218

Prime Factorization of 28238

Now multiplying the highest exponent prime factors to calculate the LCM of 28218 and 28238.

LCM(28218,28238) = 2¹ × 3¹ × 4703¹ × 7¹ × 2017¹
LCM(28218,28238) = 398409942