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What is the Least Common Multiple of 9972 and 9981?

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 9972 and 9981 is 11058948.

LCM(9972,9981) = 11058948

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Least Common Multiple of 9972 and 9981 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9972 and 9981, than apply into the LCM equation.

GCF(9972,9981) = 9
LCM(9972,9981) = ( 9972 × 9981) / 9
LCM(9972,9981) = 99530532 / 9
LCM(9972,9981) = 11058948

Least Common Multiple (LCM) of 9972 and 9981 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9972 and 9981. First we will calculate the prime factors of 9972 and 9981.

Prime Factorization of 9972

Prime factors of 9972 are 2, 3, 277. Prime factorization of 9972 in exponential form is:

9972 = 22 × 32 × 2771

Prime Factorization of 9981

Prime factors of 9981 are 3, 1109. Prime factorization of 9981 in exponential form is:

9981 = 32 × 11091

Now multiplying the highest exponent prime factors to calculate the LCM of 9972 and 9981.

LCM(9972,9981) = 22 × 32 × 2771 × 11091
LCM(9972,9981) = 11058948