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What is the Least Common Multiple of 3972 and 3989?

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 3972 and 3989 is 15844308.

LCM(3972,3989) = 15844308

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Least Common Multiple of 3972 and 3989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3972 and 3989, than apply into the LCM equation.

GCF(3972,3989) = 1
LCM(3972,3989) = ( 3972 × 3989) / 1
LCM(3972,3989) = 15844308 / 1
LCM(3972,3989) = 15844308

Least Common Multiple (LCM) of 3972 and 3989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3972 and 3989. First we will calculate the prime factors of 3972 and 3989.

Prime Factorization of 3972

Prime factors of 3972 are 2, 3, 331. Prime factorization of 3972 in exponential form is:

3972 = 22 × 31 × 3311

Prime Factorization of 3989

Prime factors of 3989 are 3989. Prime factorization of 3989 in exponential form is:

3989 = 39891

Now multiplying the highest exponent prime factors to calculate the LCM of 3972 and 3989.

LCM(3972,3989) = 22 × 31 × 3311 × 39891
LCM(3972,3989) = 15844308