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What is the Least Common Multiple of 12408 and 12421?

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 12408 and 12421 is 154119768.

LCM(12408,12421) = 154119768

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Least Common Multiple of 12408 and 12421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12408 and 12421, than apply into the LCM equation.

GCF(12408,12421) = 1
LCM(12408,12421) = ( 12408 × 12421) / 1
LCM(12408,12421) = 154119768 / 1
LCM(12408,12421) = 154119768

Least Common Multiple (LCM) of 12408 and 12421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12408 and 12421. First we will calculate the prime factors of 12408 and 12421.

Prime Factorization of 12408

Prime factors of 12408 are 2, 3, 11, 47. Prime factorization of 12408 in exponential form is:

12408 = 23 × 31 × 111 × 471

Prime Factorization of 12421

Prime factors of 12421 are 12421. Prime factorization of 12421 in exponential form is:

12421 = 124211

Now multiplying the highest exponent prime factors to calculate the LCM of 12408 and 12421.

LCM(12408,12421) = 23 × 31 × 111 × 471 × 124211
LCM(12408,12421) = 154119768