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What is the Least Common Multiple of 17768 and 17781?

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 17768 and 17781 is 315932808.

LCM(17768,17781) = 315932808

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Least Common Multiple of 17768 and 17781 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17768 and 17781, than apply into the LCM equation.

GCF(17768,17781) = 1
LCM(17768,17781) = ( 17768 × 17781) / 1
LCM(17768,17781) = 315932808 / 1
LCM(17768,17781) = 315932808

Least Common Multiple (LCM) of 17768 and 17781 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17768 and 17781. First we will calculate the prime factors of 17768 and 17781.

Prime Factorization of 17768

Prime factors of 17768 are 2, 2221. Prime factorization of 17768 in exponential form is:

17768 = 23 × 22211

Prime Factorization of 17781

Prime factors of 17781 are 3, 5927. Prime factorization of 17781 in exponential form is:

17781 = 31 × 59271

Now multiplying the highest exponent prime factors to calculate the LCM of 17768 and 17781.

LCM(17768,17781) = 23 × 22211 × 31 × 59271
LCM(17768,17781) = 315932808