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What is the Least Common Multiple of 18982 and 18991?

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 18982 and 18991 is 360487162.

LCM(18982,18991) = 360487162

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Least Common Multiple of 18982 and 18991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18982 and 18991, than apply into the LCM equation.

GCF(18982,18991) = 1
LCM(18982,18991) = ( 18982 × 18991) / 1
LCM(18982,18991) = 360487162 / 1
LCM(18982,18991) = 360487162

Least Common Multiple (LCM) of 18982 and 18991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18982 and 18991. First we will calculate the prime factors of 18982 and 18991.

Prime Factorization of 18982

Prime factors of 18982 are 2, 9491. Prime factorization of 18982 in exponential form is:

18982 = 21 × 94911

Prime Factorization of 18991

Prime factors of 18991 are 7, 2713. Prime factorization of 18991 in exponential form is:

18991 = 71 × 27131

Now multiplying the highest exponent prime factors to calculate the LCM of 18982 and 18991.

LCM(18982,18991) = 21 × 94911 × 71 × 27131
LCM(18982,18991) = 360487162