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What is the Least Common Multiple of 18624 and 18642?

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 18624 and 18642 is 57864768.

LCM(18624,18642) = 57864768

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Least Common Multiple of 18624 and 18642 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18624 and 18642, than apply into the LCM equation.

GCF(18624,18642) = 6
LCM(18624,18642) = ( 18624 × 18642) / 6
LCM(18624,18642) = 347188608 / 6
LCM(18624,18642) = 57864768

Least Common Multiple (LCM) of 18624 and 18642 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18624 and 18642. First we will calculate the prime factors of 18624 and 18642.

Prime Factorization of 18624

Prime factors of 18624 are 2, 3, 97. Prime factorization of 18624 in exponential form is:

18624 = 26 × 31 × 971

Prime Factorization of 18642

Prime factors of 18642 are 2, 3, 13, 239. Prime factorization of 18642 in exponential form is:

18642 = 21 × 31 × 131 × 2391

Now multiplying the highest exponent prime factors to calculate the LCM of 18624 and 18642.

LCM(18624,18642) = 26 × 31 × 971 × 131 × 2391
LCM(18624,18642) = 57864768