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What is the Least Common Multiple of 12558 and 12578?

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 12558 and 12578 is 78977262.

LCM(12558,12578) = 78977262

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Least Common Multiple of 12558 and 12578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12558 and 12578, than apply into the LCM equation.

GCF(12558,12578) = 2
LCM(12558,12578) = ( 12558 × 12578) / 2
LCM(12558,12578) = 157954524 / 2
LCM(12558,12578) = 78977262

Least Common Multiple (LCM) of 12558 and 12578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12558 and 12578. First we will calculate the prime factors of 12558 and 12578.

Prime Factorization of 12558

Prime factors of 12558 are 2, 3, 7, 13, 23. Prime factorization of 12558 in exponential form is:

12558 = 21 × 31 × 71 × 131 × 231

Prime Factorization of 12578

Prime factors of 12578 are 2, 19, 331. Prime factorization of 12578 in exponential form is:

12578 = 21 × 191 × 3311

Now multiplying the highest exponent prime factors to calculate the LCM of 12558 and 12578.

LCM(12558,12578) = 21 × 31 × 71 × 131 × 231 × 191 × 3311
LCM(12558,12578) = 78977262