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What is the Least Common Multiple of 64384 and 64390?

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 64384 and 64390 is 2072842880.

LCM(64384,64390) = 2072842880

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Least Common Multiple of 64384 and 64390 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64384 and 64390, than apply into the LCM equation.

GCF(64384,64390) = 2
LCM(64384,64390) = ( 64384 × 64390) / 2
LCM(64384,64390) = 4145685760 / 2
LCM(64384,64390) = 2072842880

Least Common Multiple (LCM) of 64384 and 64390 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64384 and 64390. First we will calculate the prime factors of 64384 and 64390.

Prime Factorization of 64384

Prime factors of 64384 are 2, 503. Prime factorization of 64384 in exponential form is:

64384 = 27 × 5031

Prime Factorization of 64390

Prime factors of 64390 are 2, 5, 47, 137. Prime factorization of 64390 in exponential form is:

64390 = 21 × 51 × 471 × 1371

Now multiplying the highest exponent prime factors to calculate the LCM of 64384 and 64390.

LCM(64384,64390) = 27 × 5031 × 51 × 471 × 1371
LCM(64384,64390) = 2072842880