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What is the Least Common Multiple of 18423 and 18428?

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 (LCM) of 18423 and 18428 is 339499044.

LCM(18423,18428) = 339499044

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Least Common Multiple of 18423 and 18428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18423 and 18428, than apply into the LCM equation.

GCF(18423,18428) = 1
LCM(18423,18428) = ( 18423 × 18428) / 1
LCM(18423,18428) = 339499044 / 1
LCM(18423,18428) = 339499044

Least Common Multiple (LCM) of 18423 and 18428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18423 and 18428. First we will calculate the prime factors of 18423 and 18428.

Prime Factorization of 18423

Prime factors of 18423 are 3, 23, 89. Prime factorization of 18423 in exponential form is:

18423 = 32 × 231 × 891

Prime Factorization of 18428

Prime factors of 18428 are 2, 17, 271. Prime factorization of 18428 in exponential form is:

18428 = 22 × 171 × 2711

Now multiplying the highest exponent prime factors to calculate the LCM of 18423 and 18428.

LCM(18423,18428) = 32 × 231 × 891 × 22 × 171 × 2711
LCM(18423,18428) = 339499044