What is the Least Common Multiple of 27998 and 28018?

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 27998 and 28018 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 27998 and 28018, than apply into the LCM equation.

GCF(27998,28018) = 2
LCM(27998,28018) = ( 27998 × 28018) / 2
LCM(27998,28018) = 784447964 / 2
LCM(27998,28018) = 392223982

Least Common Multiple (LCM) of 27998 and 28018 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 27998 and 28018. First we will calculate the prime factors of 27998 and 28018.

Prime Factorization of 27998

Prime Factorization of 28018

Now multiplying the highest exponent prime factors to calculate the LCM of 27998 and 28018.

LCM(27998,28018) = 2¹ × 13999¹ × 14009¹
LCM(27998,28018) = 392223982