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What is the Least Common Multiple of 13991 and 13997?

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 13991 and 13997 is 195832027.

LCM(13991,13997) = 195832027

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Least Common Multiple of 13991 and 13997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13991 and 13997, than apply into the LCM equation.

GCF(13991,13997) = 1
LCM(13991,13997) = ( 13991 × 13997) / 1
LCM(13991,13997) = 195832027 / 1
LCM(13991,13997) = 195832027

Least Common Multiple (LCM) of 13991 and 13997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13991 and 13997. First we will calculate the prime factors of 13991 and 13997.

Prime Factorization of 13991

Prime factors of 13991 are 17, 823. Prime factorization of 13991 in exponential form is:

13991 = 171 × 8231

Prime Factorization of 13997

Prime factors of 13997 are 13997. Prime factorization of 13997 in exponential form is:

13997 = 139971

Now multiplying the highest exponent prime factors to calculate the LCM of 13991 and 13997.

LCM(13991,13997) = 171 × 8231 × 139971
LCM(13991,13997) = 195832027