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What is the Least Common Multiple of 78885 and 78903?

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 78885 and 78903 is 691584795.

LCM(78885,78903) = 691584795

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Least Common Multiple of 78885 and 78903 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78885 and 78903, than apply into the LCM equation.

GCF(78885,78903) = 9
LCM(78885,78903) = ( 78885 × 78903) / 9
LCM(78885,78903) = 6224263155 / 9
LCM(78885,78903) = 691584795

Least Common Multiple (LCM) of 78885 and 78903 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78885 and 78903. First we will calculate the prime factors of 78885 and 78903.

Prime Factorization of 78885

Prime factors of 78885 are 3, 5, 1753. Prime factorization of 78885 in exponential form is:

78885 = 32 × 51 × 17531

Prime Factorization of 78903

Prime factors of 78903 are 3, 11, 797. Prime factorization of 78903 in exponential form is:

78903 = 32 × 111 × 7971

Now multiplying the highest exponent prime factors to calculate the LCM of 78885 and 78903.

LCM(78885,78903) = 32 × 51 × 17531 × 111 × 7971
LCM(78885,78903) = 691584795