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What is the Least Common Multiple of 78387 and 78404?

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 78387 and 78404 is 361520844.

LCM(78387,78404) = 361520844

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Least Common Multiple of 78387 and 78404 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78387 and 78404, than apply into the LCM equation.

GCF(78387,78404) = 17
LCM(78387,78404) = ( 78387 × 78404) / 17
LCM(78387,78404) = 6145854348 / 17
LCM(78387,78404) = 361520844

Least Common Multiple (LCM) of 78387 and 78404 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78387 and 78404. First we will calculate the prime factors of 78387 and 78404.

Prime Factorization of 78387

Prime factors of 78387 are 3, 17, 29, 53. Prime factorization of 78387 in exponential form is:

78387 = 31 × 171 × 291 × 531

Prime Factorization of 78404

Prime factors of 78404 are 2, 17, 1153. Prime factorization of 78404 in exponential form is:

78404 = 22 × 171 × 11531

Now multiplying the highest exponent prime factors to calculate the LCM of 78387 and 78404.

LCM(78387,78404) = 31 × 171 × 291 × 531 × 22 × 11531
LCM(78387,78404) = 361520844