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What is the Least Common Multiple of 13800 and 13809?

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 13800 and 13809 is 63521400.

LCM(13800,13809) = 63521400

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Least Common Multiple of 13800 and 13809 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13800 and 13809, than apply into the LCM equation.

GCF(13800,13809) = 3
LCM(13800,13809) = ( 13800 × 13809) / 3
LCM(13800,13809) = 190564200 / 3
LCM(13800,13809) = 63521400

Least Common Multiple (LCM) of 13800 and 13809 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13800 and 13809. First we will calculate the prime factors of 13800 and 13809.

Prime Factorization of 13800

Prime factors of 13800 are 2, 3, 5, 23. Prime factorization of 13800 in exponential form is:

13800 = 23 × 31 × 52 × 231

Prime Factorization of 13809

Prime factors of 13809 are 3, 4603. Prime factorization of 13809 in exponential form is:

13809 = 31 × 46031

Now multiplying the highest exponent prime factors to calculate the LCM of 13800 and 13809.

LCM(13800,13809) = 23 × 31 × 52 × 231 × 46031
LCM(13800,13809) = 63521400