GCF and LCM Calculator Logo

What is the Least Common Multiple of 12621 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 12621 and 12638 is 159504198.

LCM(12621,12638) = 159504198

LCM Calculator and
and

Least Common Multiple of 12621 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 12621 and 12638, than apply into the LCM equation.

GCF(12621,12638) = 1
LCM(12621,12638) = ( 12621 × 12638) / 1
LCM(12621,12638) = 159504198 / 1
LCM(12621,12638) = 159504198

Least Common Multiple (LCM) of 12621 and 12638 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12621 and 12638. First we will calculate the prime factors of 12621 and 12638.

Prime Factorization of 12621

Prime factors of 12621 are 3, 7, 601. Prime factorization of 12621 in exponential form is:

12621 = 31 × 71 × 6011

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 12621 and 12638.

LCM(12621,12638) = 31 × 71 × 6011 × 21 × 711 × 891
LCM(12621,12638) = 159504198