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What is the Least Common Multiple of 12831 and 12845?

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 12831 and 12845 is 23544885.

LCM(12831,12845) = 23544885

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Least Common Multiple of 12831 and 12845 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12831 and 12845, than apply into the LCM equation.

GCF(12831,12845) = 7
LCM(12831,12845) = ( 12831 × 12845) / 7
LCM(12831,12845) = 164814195 / 7
LCM(12831,12845) = 23544885

Least Common Multiple (LCM) of 12831 and 12845 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12831 and 12845. First we will calculate the prime factors of 12831 and 12845.

Prime Factorization of 12831

Prime factors of 12831 are 3, 7, 13, 47. Prime factorization of 12831 in exponential form is:

12831 = 31 × 71 × 131 × 471

Prime Factorization of 12845

Prime factors of 12845 are 5, 7, 367. Prime factorization of 12845 in exponential form is:

12845 = 51 × 71 × 3671

Now multiplying the highest exponent prime factors to calculate the LCM of 12831 and 12845.

LCM(12831,12845) = 31 × 71 × 131 × 471 × 51 × 3671
LCM(12831,12845) = 23544885