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What is the Least Common Multiple of 12885 and 12891?

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 12885 and 12891 is 55366845.

LCM(12885,12891) = 55366845

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Least Common Multiple of 12885 and 12891 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12885 and 12891, than apply into the LCM equation.

GCF(12885,12891) = 3
LCM(12885,12891) = ( 12885 × 12891) / 3
LCM(12885,12891) = 166100535 / 3
LCM(12885,12891) = 55366845

Least Common Multiple (LCM) of 12885 and 12891 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12885 and 12891. First we will calculate the prime factors of 12885 and 12891.

Prime Factorization of 12885

Prime factors of 12885 are 3, 5, 859. Prime factorization of 12885 in exponential form is:

12885 = 31 × 51 × 8591

Prime Factorization of 12891

Prime factors of 12891 are 3, 4297. Prime factorization of 12891 in exponential form is:

12891 = 31 × 42971

Now multiplying the highest exponent prime factors to calculate the LCM of 12885 and 12891.

LCM(12885,12891) = 31 × 51 × 8591 × 42971
LCM(12885,12891) = 55366845