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What is the Least Common Multiple of 17993 and 17997?

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 17993 and 17997 is 323820021.

LCM(17993,17997) = 323820021

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Least Common Multiple of 17993 and 17997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17993 and 17997, than apply into the LCM equation.

GCF(17993,17997) = 1
LCM(17993,17997) = ( 17993 × 17997) / 1
LCM(17993,17997) = 323820021 / 1
LCM(17993,17997) = 323820021

Least Common Multiple (LCM) of 17993 and 17997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17993 and 17997. First we will calculate the prime factors of 17993 and 17997.

Prime Factorization of 17993

Prime factors of 17993 are 19, 947. Prime factorization of 17993 in exponential form is:

17993 = 191 × 9471

Prime Factorization of 17997

Prime factors of 17997 are 3, 7, 857. Prime factorization of 17997 in exponential form is:

17997 = 31 × 71 × 8571

Now multiplying the highest exponent prime factors to calculate the LCM of 17993 and 17997.

LCM(17993,17997) = 191 × 9471 × 31 × 71 × 8571
LCM(17993,17997) = 323820021