What is the Least Common Multiple of 28154 and 28158?

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 28154 and 28158 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28154 and 28158, than apply into the LCM equation.

GCF(28154,28158) = 2
LCM(28154,28158) = ( 28154 × 28158) / 2
LCM(28154,28158) = 792760332 / 2
LCM(28154,28158) = 396380166

Least Common Multiple (LCM) of 28154 and 28158 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28154 and 28158. First we will calculate the prime factors of 28154 and 28158.

Prime Factorization of 28154

Prime Factorization of 28158

Now multiplying the highest exponent prime factors to calculate the LCM of 28154 and 28158.

LCM(28154,28158) = 2¹ × 7¹ × 2011¹ × 3¹ × 13¹ × 19²
LCM(28154,28158) = 396380166