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What is the Least Common Multiple of 18875 and 18890?

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 18875 and 18890 is 71309750.

LCM(18875,18890) = 71309750

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Least Common Multiple of 18875 and 18890 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18875 and 18890, than apply into the LCM equation.

GCF(18875,18890) = 5
LCM(18875,18890) = ( 18875 × 18890) / 5
LCM(18875,18890) = 356548750 / 5
LCM(18875,18890) = 71309750

Least Common Multiple (LCM) of 18875 and 18890 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18875 and 18890. First we will calculate the prime factors of 18875 and 18890.

Prime Factorization of 18875

Prime factors of 18875 are 5, 151. Prime factorization of 18875 in exponential form is:

18875 = 53 × 1511

Prime Factorization of 18890

Prime factors of 18890 are 2, 5, 1889. Prime factorization of 18890 in exponential form is:

18890 = 21 × 51 × 18891

Now multiplying the highest exponent prime factors to calculate the LCM of 18875 and 18890.

LCM(18875,18890) = 53 × 1511 × 21 × 18891
LCM(18875,18890) = 71309750