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What is the Least Common Multiple of 12389 and 12403?

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 12389 and 12403 is 153660767.

LCM(12389,12403) = 153660767

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Least Common Multiple of 12389 and 12403 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12389 and 12403, than apply into the LCM equation.

GCF(12389,12403) = 1
LCM(12389,12403) = ( 12389 × 12403) / 1
LCM(12389,12403) = 153660767 / 1
LCM(12389,12403) = 153660767

Least Common Multiple (LCM) of 12389 and 12403 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12389 and 12403. First we will calculate the prime factors of 12389 and 12403.

Prime Factorization of 12389

Prime factors of 12389 are 13, 953. Prime factorization of 12389 in exponential form is:

12389 = 131 × 9531

Prime Factorization of 12403

Prime factors of 12403 are 79, 157. Prime factorization of 12403 in exponential form is:

12403 = 791 × 1571

Now multiplying the highest exponent prime factors to calculate the LCM of 12389 and 12403.

LCM(12389,12403) = 131 × 9531 × 791 × 1571
LCM(12389,12403) = 153660767