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What is the Least Common Multiple of 17836 and 17856?

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 17836 and 17856 is 79619904.

LCM(17836,17856) = 79619904

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Least Common Multiple of 17836 and 17856 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17836 and 17856, than apply into the LCM equation.

GCF(17836,17856) = 4
LCM(17836,17856) = ( 17836 × 17856) / 4
LCM(17836,17856) = 318479616 / 4
LCM(17836,17856) = 79619904

Least Common Multiple (LCM) of 17836 and 17856 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17836 and 17856. First we will calculate the prime factors of 17836 and 17856.

Prime Factorization of 17836

Prime factors of 17836 are 2, 7, 13. Prime factorization of 17836 in exponential form is:

17836 = 22 × 73 × 131

Prime Factorization of 17856

Prime factors of 17856 are 2, 3, 31. Prime factorization of 17856 in exponential form is:

17856 = 26 × 32 × 311

Now multiplying the highest exponent prime factors to calculate the LCM of 17836 and 17856.

LCM(17836,17856) = 26 × 73 × 131 × 32 × 311
LCM(17836,17856) = 79619904