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What is the Least Common Multiple of 12630 and 12638?

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 12630 and 12638 is 79808970.

LCM(12630,12638) = 79808970

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Least Common Multiple of 12630 and 12638 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12630 and 12638, than apply into the LCM equation.

GCF(12630,12638) = 2
LCM(12630,12638) = ( 12630 × 12638) / 2
LCM(12630,12638) = 159617940 / 2
LCM(12630,12638) = 79808970

Least Common Multiple (LCM) of 12630 and 12638 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12630 and 12638. First we will calculate the prime factors of 12630 and 12638.

Prime Factorization of 12630

Prime factors of 12630 are 2, 3, 5, 421. Prime factorization of 12630 in exponential form is:

12630 = 21 × 31 × 51 × 4211

Prime Factorization of 12638

Prime factors of 12638 are 2, 71, 89. Prime factorization of 12638 in exponential form is:

12638 = 21 × 711 × 891

Now multiplying the highest exponent prime factors to calculate the LCM of 12630 and 12638.

LCM(12630,12638) = 21 × 31 × 51 × 4211 × 711 × 891
LCM(12630,12638) = 79808970