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What is the Least Common Multiple of 6891 and 6900?

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 6891 and 6900 is 15849300.

LCM(6891,6900) = 15849300

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Least Common Multiple of 6891 and 6900 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6891 and 6900, than apply into the LCM equation.

GCF(6891,6900) = 3
LCM(6891,6900) = ( 6891 × 6900) / 3
LCM(6891,6900) = 47547900 / 3
LCM(6891,6900) = 15849300

Least Common Multiple (LCM) of 6891 and 6900 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6891 and 6900. First we will calculate the prime factors of 6891 and 6900.

Prime Factorization of 6891

Prime factors of 6891 are 3, 2297. Prime factorization of 6891 in exponential form is:

6891 = 31 × 22971

Prime Factorization of 6900

Prime factors of 6900 are 2, 3, 5, 23. Prime factorization of 6900 in exponential form is:

6900 = 22 × 31 × 52 × 231

Now multiplying the highest exponent prime factors to calculate the LCM of 6891 and 6900.

LCM(6891,6900) = 31 × 22971 × 22 × 52 × 231
LCM(6891,6900) = 15849300