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What is the Least Common Multiple of 4478 and 4489?

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 4478 and 4489 is 20101742.

LCM(4478,4489) = 20101742

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Least Common Multiple of 4478 and 4489 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4478 and 4489, than apply into the LCM equation.

GCF(4478,4489) = 1
LCM(4478,4489) = ( 4478 × 4489) / 1
LCM(4478,4489) = 20101742 / 1
LCM(4478,4489) = 20101742

Least Common Multiple (LCM) of 4478 and 4489 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4478 and 4489. First we will calculate the prime factors of 4478 and 4489.

Prime Factorization of 4478

Prime factors of 4478 are 2, 2239. Prime factorization of 4478 in exponential form is:

4478 = 21 × 22391

Prime Factorization of 4489

Prime factors of 4489 are 67. Prime factorization of 4489 in exponential form is:

4489 = 672

Now multiplying the highest exponent prime factors to calculate the LCM of 4478 and 4489.

LCM(4478,4489) = 21 × 22391 × 672
LCM(4478,4489) = 20101742