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What is the Least Common Multiple of 17864 and 17872?

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 17864 and 17872 is 39908176.

LCM(17864,17872) = 39908176

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Least Common Multiple of 17864 and 17872 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17864 and 17872, than apply into the LCM equation.

GCF(17864,17872) = 8
LCM(17864,17872) = ( 17864 × 17872) / 8
LCM(17864,17872) = 319265408 / 8
LCM(17864,17872) = 39908176

Least Common Multiple (LCM) of 17864 and 17872 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17864 and 17872. First we will calculate the prime factors of 17864 and 17872.

Prime Factorization of 17864

Prime factors of 17864 are 2, 7, 11, 29. Prime factorization of 17864 in exponential form is:

17864 = 23 × 71 × 111 × 291

Prime Factorization of 17872

Prime factors of 17872 are 2, 1117. Prime factorization of 17872 in exponential form is:

17872 = 24 × 11171

Now multiplying the highest exponent prime factors to calculate the LCM of 17864 and 17872.

LCM(17864,17872) = 24 × 71 × 111 × 291 × 11171
LCM(17864,17872) = 39908176