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What is the Least Common Multiple of 18660 and 18664?

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 18660 and 18664 is 87067560.

LCM(18660,18664) = 87067560

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Least Common Multiple of 18660 and 18664 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18660 and 18664, than apply into the LCM equation.

GCF(18660,18664) = 4
LCM(18660,18664) = ( 18660 × 18664) / 4
LCM(18660,18664) = 348270240 / 4
LCM(18660,18664) = 87067560

Least Common Multiple (LCM) of 18660 and 18664 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18660 and 18664. First we will calculate the prime factors of 18660 and 18664.

Prime Factorization of 18660

Prime factors of 18660 are 2, 3, 5, 311. Prime factorization of 18660 in exponential form is:

18660 = 22 × 31 × 51 × 3111

Prime Factorization of 18664

Prime factors of 18664 are 2, 2333. Prime factorization of 18664 in exponential form is:

18664 = 23 × 23331

Now multiplying the highest exponent prime factors to calculate the LCM of 18660 and 18664.

LCM(18660,18664) = 23 × 31 × 51 × 3111 × 23331
LCM(18660,18664) = 87067560